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Lost in Space (1965)
The Reluctant Stowaway
In the year 1997 the Robinson family take off to colonise Alpha Centuri. A spy from a foreign country AKA Dr. Smith becomes trapped aboard trying to sabotage the project. The ship is whisked off course and into a meteor storm due to Dr Smith's extra weight upsetting navigational computers. Smith, despartely tries to save himself by reviving the crew. The result: the Robinson family becomes lost in space.
The Derelict
The jupiter 2 is pulled into a giant alien spaceship where there are advanced bubble like creatures.While John and Don look for maps and equipment Dr Smith and Will look for trouble.
Island in the Sky
Professor Robinson attempts to explore a planet that the Robinson's are planning to land on. His para-jet propulsion system fails due to sabotage by Dr. Smith. Major West "lands" the Jupiter II, in spite of the fact that Dr. Smith has also sabotaged the propulsion system of the Jupiter II, and the family and Major West rescue Professor Robinson.
There Were Giants in the Earth
John discovers that the planet they are on will travel further from the sun.In an attempt to survive the Robinsons pack up and head south. Dr Smith stays at the Jupiter 2 site while the Robinson family encounter a terrifying cyclops and an ancient deserted city.
The Hungry Sea
Professor Robinson discovers that the planets orbit will bring immense heat on the spaceship. With that knowledge the Robinson's take off in the chariot and head south. However back at the Jupiter two, Dr Smith who stayed behind because he believed them to be lying, realises that the orbit is strange, bringing immense cold followed by extreme heat. He sends the Robot to tell them, and they then attempt to travel back to the Jupiter 2. However in their way is a huge in-land sea which previously had been frozen solid. The immense heat and cold make the vegetation charred. They survive the heat and return to the Jupiter Two where they are most safe.
Welcome Stranger
Jimmy Hapgood lands on the planet and the Robinsons befriend him.After helping him fix his spaceship the Robinsons try and convince him to take Will and Penny back to Earth with him.But Dr Smith trys to get aboard the ship back to Earth.
My Friend, Mr. Nobody
Penny "imagines" a new companion,which is a disembodied life force living below the surface.Dr Smith accidentally injures Penny leading to the creature taking his anger out on the entire planet.
Invaders from the Fifth Dimension
Luminous aliens capture Dr Smith and plan to replace thir burnt out computer with his brain.Smith bargains with them and they attempt to use Wills brain instead.
The Oasis
Smith eats some alien fruit which leads him into being a giant.Convinced it was the Robinsons trying to kill him he plots to take them out.
The Sky Is Falling
The Robinsons can not understand the language of a visitig family also on the planet. The aliens are called Taurons, and come to use the planet as a new colony. However Dr Smitch causes problems between the two camps when he panics and draws a gun on the new family. The Tauron's end up not liking the planet and want to be alone, so they leave.
Wish Upon a Star
The Robinson family banish Smith from the Jupiter 2.He takes refuge in an abandoned spaceship where he finds a machine that can materilise anything.In an attempt to get back into the Robinsons good books he gives them the machine which plays on the familys greed.
The Raft
The Robinsons build a small spaceship which can fly 2 people.Smith and Will take off in it, accidently, as it was meant to return Don to Earth on a rescue mission. They land on a planet which at first they think is Earth. In reality it is merely a planet full of dense forestation and vegetation. They are saved form the plants and monsters by Don.
One of Our Dogs Is Missing
The women of Lost in Space are featured in their very own episode while the boys are out installing communications equipment. Smith is left in charge (boy is that a mistake) and he "cleans" their weapons, but cannot remember how to rebuild the weapons. This leaves the J2 crew defenseless. A creepy creature stalks the Robinson women however they think a small dog is to blame for raids on food and other mischief.
Attack of the Monster Plants
Plants grow to huge proportions and can duplicate any item placed in them - but those items are made of plant material and are useless. John Robinson must use the biggest batch of plant killer he's ever mixed up to stop these things from engulfing the spaceship.
Return from Outer Space
Lost in Space's only Christmas program. Will uses an alien transporter to send himself back to earth. However, many people believe the Robinson family to be dead after hearing the ship went off course. Nobody on Earth believes him, and they lock him up with the intention of sending him to a boys' home. Will escapes the family home he's in, and wanders around these clueless bunch of townspeople, but finds carbon tetrachoride - needed for the food processors on the Jupiter. Eventually he convinces another boy Davey to let him out, and let him return to the planet he came from. He returns to Priplanis with this bottle. Of course no one believes his adventures until he produces the bottle, plainly labeled as coming from earth.
The Keeper (1)
The Keeper, played by Michael Rennie, is a zoo keeper. He wants to take the children and add them to his collection. This episode is the only two parter from the series.
The Keeper (2)
The second part of the zookeeper played by Michael Rennie. Rennie turns in a memorable performance as The Keeper. His understated performance keeps dramatic tension where none would probably exist with a lessor actor.
The Sky Pirate
The Robinsons meet a space traveler who turns out to be an Earth man, Alonzo P. Tucker, who was abducted from Punxsutawney, Pennsylvania, by aliens, in 1876. Tucker befriends Will by telling tall tales about being a pirate, but it turns out that he is only an ordinary man being pursued by aliens because he has stolen a mind reading device from them. Tucker returns the mind reading device to his alien pursuers, saving the Robinsons in the process.
Ghost in Space
Dr. Smith holds a seance to contact his Uncle Thaddeus. Instead a spirit creature is contacted and creates havoc for the Robinsons. It is later discovered that the "spirit creature" is a physical creature, rendered invisible by the properties of the "ionized gas" in the bog from which it came.
War of the Robots
Will and Dr. Smith stumble upon another robot. More capable than their own robot the alien robot works to gain the confidence of the Robinsons. At a critical point he plans to transport them to his home planet as slaves.
The Magic Mirror
Penny and Judy stumble upon a mirror. They discover someone is on the otherside. Before they know it they are transported to the mirror universe which is occupied by only one person, a boy who is lonesome for companionship.
The Challenge
An alien boy is sent to Priplanis to validate his prince status. Will is drawn into a battle to the death unbeknowest to his father. Once his real intentions are known John substitutes himself in the challenge and the Alien Ruler substitutes himself for his son.
The Space Trader
After the entire Robinson food supply is wiped out in a freak storm a trader arrives to trade food for equipment the Robinson's possess. Dr. Smith trades the robot for food and hoards the supplies for himself. Later, after the Robinson's discover his transaction he gets the robot back but in exchange for his own self. The Trader then wants to take Smith as a slave, to another planet.
His Majesty Smith
Dr. Smith is conscripted as the leader of a people from another world. Little does he know that the leaders of these people are routinely sacrificed and replaced with other expendible leaders. Smith is just one of a long line of sacrificed rulers.
The Space Croppers
The Beverly Hillbillies move to Priplanis. One of the aliens turns into a werewolf at night. The leader is a articulent female which Smith tries to court so he may have transportation back to earth. Don falls for the sexy alien daughter.
All That Glitters
It's a retelling of "The Midis Touch". Dr. Smith gains the power to turn anything into platinum. Penny is given a gift by a theif on the run, who tells her to protect it for him. She and Dr Smith discover that it leeds them to a ring which when worn allows the person to turn anything to plantinum, which Dr Smith does and enjoys. However when it turns even his food to platinum, he is unable to remove the ring, which is now a solid bar. He leaves the camp as he fears turning eveything in to platinum, and fearing he will eventually starve to death. A galactic lawman is on the trail, looking for the stolen device to use for his own nefarious purposes. Dr Smith later accidently turns Penny to platinum, and hands himself in to the lawman. When he relaises he has a learnt a lesson, and not be so greedy, the ring unlatches and he is able to get it off, and Penny is returned to normal.
The Lost Civilization
The Robinson men discover an underground civilization while exploring the planet. Will wakes a sleeping princess who wants him to remain and rule with her.
A Change of Space
The Intergalactic Delivery Service comes to Priplanus. Once again Dr. Smith seeks transportation and has Will "test drive" the spaceship. Will returns much smarter than when he left. Smith realizing the same could happen to him, the increase of intellect, boards the spaceship. His trip, however, ends in his rapid aging and subsequent impending death. To make matters worse, the owner of the spaceship has returned to take the vehicle back, stranding Will and Dr. Smith in their altered state.
Follow the Leader
John Robinson is possessed by an alien spirit. The alien forces the family to prepare to return to the spirit's home world, even if it requires he sacrifice Will to keep his secret from the rest of the family.
Blast Off into Space
Dr Smith and Will befriend an old miner named Nerim. After a series of earthquakes indicates that the planet is breaking up, Dr Smith tries to convince them that it is merely the effects of mining, and no harm will come to the planet. John informs him that he is wrong and that the Robinson family will be departing within the day. It is a race against time to escape the crumbling planet.
Wild Adventure
While the Jupiter 2 is finally on it way back to earth, the ship flys out of control and straight towards the sun. When Dr. Smith is seduced out into space by a alien, the crew has to come to his rescue.
The Ghost Planet
Due to Smith's actions the crew has had to land there ship on a alien planet which is run by cyborgs. Meanwhile the crew try to break free for the captors who promise them power and luxury and they have to save there robot who was crippled by a ray gun.
Forbidden World
When an alien believes that the Jupiter 2 has fired a missile at them that alien puts the crew in grave danger for there lives.
Space Circus
The Space Family Robinson go through a food crisis when their plant purifier breaks down. Will and Dr Smith discover a travelling show of circus people, and Will is later tricked in to agreeing to join. It's a race against time for the Robinsons to save will, and keep themselves alive.
The Prisoners of Space
The Robinsons and Major West are imprisoned in their camp, after being indited to appear before the a trial in court space crimes. As the trial begins, Dr Smith's name begin's to appear and it is not long before it is realised that all of the Robinson's crimes are due to Dr Smith, and he is indited to appear before the court. Will he be found guilty?
The Android Machine
Will and Dr Smith discover an old, abandoned Android Machine. When Dr Smith plays with the buttons on the machine, he accidently orders an Android. He thinks he has it for free, and uses her as his personal slave, assuming she has no human emotions. What will he do when the owner, Zumdish, and his guard turn up...demanding payment?
The Deadly Games of Gamma 6
When a troope of Galactic Gladiators arrive on the planet, they challenge Professor Robinson to a duel, which will be aired all of the galaxy. John declines saying he isn't interested in physical combat. Dr Smith takes up the offer when he makes a deal that if he wins, he will be returned to Earth. Unbeknownst to him, if he loses, which is a near-certanty, Earth will be destroyed.
The Thief from Outer Space
A person know as ' the thief from outer space' appears in a puff of smoke, will agrees help help him rescue a princess who was lost more than 200 years ago by evil vizier.
The Curse of Cousin Smith
When Dr Smith's cousin Jeremiah Smith arrives on the planet, everyone welcomes him, except Dr Smith. Dr Smith alienates himself from the family, and refuses to return until his cousin leaves. It is later discovered that Jeremiah's reaosns for being on the planet are far deadlier than anyone imagined.
West of Mars
Dr Smith is confronted by an identical look-alike called Zeno, who is on the run from the law. Zeno makes him trade places and Dr Smith, out of fear confesses to Zeno's crimes. He is arrested and he and Will taken away to appear in court. Will the real Zeno be caught before Dr Smith is boiled in oil?
A Visit to Hades
Dr Smith, Will and the Robot discover an old harp under a carved out rock. They discover that in playing the right tune, it unlocks a passage to another world. In travelling here, Dr Smith meets an alien who believes to be the devil, and believes the place to be Hell. When he leaves, and the Alien shows up on the planet, Dr Smith is frightened. Judy befriends the alien, and is accidently taken to the other world. It is up to Don and John to save her, and finally Dr Smith realises it is not hell, and merely a prison world for a criminal.
The Wreck of the Robot
While playing a outdoor match, Will and Smith's ball explodes, and as the smoke clears there ball has turns into gold. the ball rolls into the cave which has 3 aliens inside, the alien wants the robot , which is later stolen when Will refuses to let them have it and Smith does. Can the crew get there robot back.
The Dream Monster
During a heat wave, Penny comes across a giant, golden man, and his owner. She is told that the creature is called Raddion, a creation which only needs human emotions to be complete. When Dr Smith is removed from the camp, he is taken by two midgets who work with Raddion, and in another atempt to be returned to Earth, agrees to get the emotions from the Robinsons. He does so by taking their pictures, and all that is needed is for the Robinsons to shake hands with him. Don protests and heads back for camp, as do the Robinsons minus their emotions. Eventually they are returned to normal and it is learnt that human emotions cannot be bought or stolen.
The Golden Man
While the rest of the men are away, Dr Smith and the Robinson women are affronted by a mysetrious man in gold, who claims to be at war with a race of green aliens. Penny meets the green alien, and takes a liking to him, and immediately hates the Golden Man. When they are faced with the reality that their planet may be blown up due to war, Penny risks her life to save her green friend, while Dr Smith makes other startling revelations, and renders the family helpless.
The Girl From the Green Dimension
Athena the girl from the green dimension who hypnotised Dr Smith during thier space flight arrives on the planet. She still is in love with Dr Smith, which he uses to bribe her to help him see the future. However, he promises to go back to the green dimension with him, and when Athena's previous suitor arrives and turns Will green, Dr Smith must find a way to save himself and Will. Urso, Athena's suitor challenges Dr Smith for the lady, customary in the Green Dimension, and after seeing the future, Dr Smith fears the worst. Athena realises he cannot be with her, and leaves with Urso, but not before Urso restores Will's colour.
The Questing Beast
Will and Dr Smith are confronted by a knight, who says he is on a quest to seek out and destroy the beast Gundemar. Penny, meanwhile, meets Gundemar and befriends her. Will becomes the pageboy of the knight. When it is discovered that the beast is woman, the knight is unsure whether he can still kill it, leading him to question his life's future.
The Toymaker
Dr Smith discovers another Android Machine, in the middle of a dangerous fisher. When he tries to order something, he is trapped inside the machine. Later when Will tries to get him out, he too is sucked in. Zumdish arrives on the planet in order to destroy the faulty, forgotten machine. Meanwhile Will and Dr Smith discover the magical Toymaker's world, as they are mistekn for toys. They later discover they are close to earth. Will they return to Earth, be blown up, or Will Professor Robinson and the Robot be able to save them.
Mutiny in Space
Dr. Smith's finds an alien ship and wants to use it to get back to earth, but he doesn't count for the owner of the ship admiral zahik to turn up and wreck his plans.
The Space Vikings
A storm looms up and the two gloves of Thor appear from space and straight into the waiting hands of Dr. Smith. Then are then taken away to see the real Thor who will decide there fate.
Rocket to Earth
The crew are outside playing ball when a magician called Zalto. Dr. Smith uses Zalto to conjure up a space ship so he can use it to get back to earth.
The Cave of the Wizards
Dr. smith hits his head on a rock and goes into the depths of a cave where he finds a mummy, meanwhile the crew have to blast off at 8:00am, and while the also have to rescue Dr. Smith.
Treasures of the Lost Planet
Alonzo P. Tucker returns, this time more in keeping with the pirate character he tried to create in his first appearance. This time Tucker is searching for Billy Bones' treasure, and is using the head of Billy Bones, which is kept in a box, to help him find it. He has three cutthroats with him, and he has to find the treasure and keep the cutthroats from endangering the Robinsons. Tucker's robotic bird is back again, and continues to torment the robot.
Revolt of the Androids
Penny meets up with Verda the Android Dr Smith ordered, who is on the run from a super android, IDAK. She is now much more human-like. IDAK however is faulty and is incapable of crushing anything or anyone. Another OMEGA-IDAK is released, and vows to "crush, kill, destroy." Verda hides with the Robinsons but out of fear she and Panny run, when Zumdish and his guard arrive to get her. IDAK is defeated, and Verda and the faulty IDAK take off together, obviously in love.
The Colonists
The Robinson's communications system is knowcked out, and they discover that the culprit is a female warrior, who is planing on making this planet a colony for her people. She encaptures the members of the Robinson camp, and puts the men to work clearing a landing platform and erecting an arc. Meanwhile she keeps the females seperate and teaches them of the virtues of females, and the vices of males. Dr Smith becomes her escort to get out of work. Just before her colonists arrive, John, Will, Don and Dr Smith destroy the arc, and the colonists leave. It ends with Noble Neolani questioningthe value of men, and perhaps they weren't as bad or stupid as she thought.
Trip Through the Robot
With the power source of the Robinson's at a low, they are unable to recharge the Robot. As a result of this the Robot leaves the group, not wanting to be a further burden to them. When they later change thier minds, they cannot find the Robot. Will and Dr Smith discover late one night, but due to the gases in the area he has grown to be bigger than a house. Will decides to only way to reverse the process is for them to go inside him, and work it internally. Will they get out in time?
The Phantom Family
Will returns to camp following a cosmic storm. John and Maureen are not there as they are at the weather relay station for a few nights. When he gets there, the rest of the family are acting strange. He finds out they are androids, sent to learn how to cope like the Robinsons and teach the rest of their race when they return home. The real Robinsons, are kept in a tube, as they are not allowed to come in to contact with thier double. Will must teach them to become like their counterparts.
The Mechanical Men
After Dr Smith is turned away from camp yet again, he awakes from a nap to find he has been tied up by little mechanical men. The Robinson's camp is invaded the mechanical men of INDUSTRO, who claim that they want a leader..their leader. The Robinson's learn that the Robot is what they want, and that if he is not surrendered the mechanical men will attack. When the Robot surrenders, the mechanical men realise he is not the "evil" leader they wanted and they subsequently switch his personality with Dr Smith. An attack occurs when Dr Smith returns to camp wth the voice and personality of the Robot, which Don finds hilarious, and uses to full advantage. An attack ensues and the mechanical men are defeated and turn Dr Smith and the Robot back.
The Astral Traveler
Dr Smith and Will become trapped in a cave during a cosmic storm. Will is accidently pulled through a cosmic time warp, and ends up on Earth, in Scottish castle. He meets a headless ghost called Hamish who was beheaded at the Castle. Hamish is trapped there due to the callous crimes he has committed. They rest of the family manage to get Will out, but Hamish follows him. They decide to re-create the time warp, and send Hamish home, and with him Dr Smith, carrying star-charts and maps so that he may send a rescue mission to save the Robinsons. Upon re-entering the warp, Dr Smith drops the charts, and Will runs after him to give them to him. They are both taken. When they reach the castle again, Dr Smith and Will realise that they are not in their time. Also, Hamish becomes angry when he realises that Dr Smith is a liar, and has no intention of helping the Robinsons. As an act of reveng he sets out to destroy Dr Smith. In the end, Will and Dr Smith return to the planet, and Hamish is able to "cross-over" to heaven and finally rest.
The Galaxy Gift
As they are rehearsing a play, Dr Smith, Will, Penny and the Robot encounter a creature who appears to be suffocating. Dr Smith refuses to help out of fear but Penny helps him. The alien puts himself in human form so that he may breathe the atmosphere. He says he is Mr Arcon. Penny takes him back to the Jupiter II to rest. Later he gives Penny a gift which he says she must guard with her life. He tells her that as long as she wears the belt, she will be safe. He disappears, and it is not long before a group of aliens turn up, looking for the belt. They inflict immense cold on the planet as a way of trying to get the belt, but Penny refuses despite pleas from Dr Smith. Dr Smith makes a copy of the Belt and tries to give the fake to Aliens. They are angry, but still want his help. They promise to return him to Earth should he get the belt. Dr Smith and Penny go through the Alien's machine, where they have created a world from the Dr Smith's memory, which will trick them in to thinking is Earth. Penny gives up the belt, and in the meantime, Arcon returns to the spaceship looking for the belt. Realising she is in trouble, Arcon goes to the place where Penny is and defeats the Aliens. He is angry she gave it up, and believes she did it selfishly. She protests and claims she did it because they threatened to hurt her family. Arcon takes this thought and leaves.
Condemned of Space
The beginning of the third season finds the Robinsons having to quickly leave the planet they are on, which is a similar plot to the beginning of the second season. Once in space, the robot is swept overboard and has to be rescued. Then the Robinsons find a prison ship filled with cryogenically preserved prisoners. The prisoners have been interred past their normal sentences due to a malfunctioning timepiece on the prison ship. Professor Robinson repairs the timepiece and frees the prisoners. Robby the Robot makes another appearance, threatening Professor Robinson and Major West.
Visit to a Hostile Planet
The Jupiter 2 and all aboard are caught in a space 'time-warp'! After everything seems to return to normal, they're shocked to find Earth within their reach and decide to return home. Though they're perplexed that they are unable to contact 'Alpha-Control', they decide to land in the 'good ole USA' ....only to find it's 1947! As usual, Dr. Smith causes issues & even considers staying behind when the Robinsons and West announce plans to leave.
Kidnapped in Space
Dr. Smith answers a distress call from an alien space ship. He arrives there using the Space Pod, and discovers that the aliens want him to operate on (actually, repair), their leader. It turns out that the aliens are a race of some sort of robot that survive as long as their leader, who functions as their central control timepiece, is in working order. The Robinsons come to Smith's rescue in the Jupiter II. The leader is repaired by the robot, and the extended space family Robinson leave the alien space ship safely.
Hunter's Moon
In an episode reminiscent of the first season episode "The Challenge", Professor Robinson and the Robot land the Space Pod on a planet, and Professor Robinson kills an attacking monster, only to discover that he has interfered with a contest where a highly intelligent alien who aspires to rule his home planet is being judged on how well he hunts. The alien forces Professor Robinson to take the role of one of the hunted animals in the contest, allowing the Professor one weapon. The weapon has a defect that imperils Professor Robinson, but the Professor outwits the alien and survives the ordeal.
The Space Primevals
Don and Dr Smith are in charge of capping a volcano, which, if it erupted, would destroy the Robinsons. Before they get there, they are taken hostage by a group of pre-historic aliens. John, Will and the Robot set out the find them. John, using the space pod to fly over the area, doesn't find them or the chariot, but Will and the Robot, who are on foot, do. The Space Pod is covered in some sort of plant life, and looks quite "pre-historic." John, Will and the Robot must try to free Dr Smith and Don, before they run out of oxygen in the cave where they are being held. John rescues them, and the group of aliens evolve in to another live form. They then cap the volcano, so all is safe.
The Space Destructors
Dr. Smith and the Robot are exploring a cave. Smith pushes several buttons on a conspicuous control panel. The buttons activate a cyborg creating device. It up to Will to stop Dr. Smith.
The Haunted Lighthouse
Before leaving their planet, the Robinsons meet a boy alien called J-5. They take him with them to return him to his home planet. They meet a strange ship, which turns out to be an earth "lighthouse" for lost ships. Thinking this ship will help them with extra fuel and star charts they celebrate, however when J-5 learns that they don't have enough fuel to take him home, he angrily sets about to destroy them all with a creation of his imagination. J-5 begins a new life at the lighthouse, and the Robinson's leave in the knowledge he will be looked after by the kindly, old lighthousekeeper.
Flight into the Future
Dr. Smith, Will, and the Robot are accidentally launched in the Space Pod. They land on a planet that is controlled by an alien machine that creates illusions to confuse visitors and drive them away. The Jupiter II lands and rescues them, and the robot destroys the alien machine.
Collision of the Planets
The Robinson's come across a group of space hippies who are trying to destroy the planet the Robinson's currently inhabit. Up up to the Robinson's and Dr. Smith to stop them or they will all be doomed.
The Space Creature
A strange blue fog seems to be engulfing the Jupiter 2 periodically. Dr Smith and Will commment seperately that they want to be left alone. When the members of the Jupiter 2 begin to randomly disappear as the fog comes, Dr Smith thinks he is to blame. Eventually Will discovers a strange creature which takes over Dr Smith. The creature tells Will that he is his own Id. Will finds out his Id is a creature he created full of Will's own personal demons, thoughts, feelings and insecurities. Will defeats the creature by overcoming his "fears" and throws the powerless creature in the power core. The members of his family are returned.
Deadliest of the Species
The Robinsons encounter two Aliens who are on a mission to seek and destroy an escaped Robot Prisoner, whom they believe to be hiding at the Jupiter Two. Meanwhile, the Robot meets and falls in love with this evil, female Robot. She tries to turn the Robot bad, but ultimately, is defeated by the Robot and the Robinsons, but not before wreaking havoc over the planet.
A Day at the Zoo
A caveboy appears and attempts to lure Penny away, but she refuses, and is instead caught in a net. She is transported to an intergalactic zoo, were she will be puton show, meanwhile Dr. Smith tries to take over the zoo.
Two Weeks in Space
Two aliens, who are actually intergalactic bank robbers, transform themselves into Earthlings. They revive a man named Zumdish who operates a tour agency and they pretend to be his clients. The Robinson's head off and Dr. Smith is left alone, Smith's decides to turn the ship into a hotel and doesn't realize how dangerous his guests are.
Castles in Space
The Robinsons take in a Princess who is fleeing from a bounty hunter. Will is captured by the bounty hunter, who wants to trade the boy for the princess. the robot then comes up with a idea to save the day.
The Anti-Matter Man
Professor Robinson is caught in a matter transfer emission ray, and subsequently ends up in another dimension where he is confronted by a version of himself and Don. However this realm is the opposite of his own dimension, the anti-matter world, where everything in reality is twisted. The evil John returns to the family and attempts to take over the Robinsons and take over John's life. Will he get away with it, or are Will and the Robot able to defeat him, and restore the world to it's natural order.
Target: Earth
The Space Pod lands on a planet that is inhabited by creatures who all look alike, and aspire to be different. They capture the Robinsons and make duplicates of them with the objective of using the duplicates to fly the Jupiter II back to Earth. Will is not duplicated, and he thwarts their plan.
Princess of Space
A crew led by Captain Kraspo is searching for the missing Princess Alpha. They bring Will aboard their ship who makes them think the Penny might be there princess, because of this the train Penny to be the future ruler of there planet.
The Time Merchant
Will is conducting an experiment in a cave and captures a man who claims to be the man who controls time for the entire universe. This "Time Merchant" takes Will, Professor Robinson, Smith, and the Robot, to his secret lair. From there, Smith uses the Time Merchant's time machine to return himself to Earth on the day the Robinson's departed, with the objective of NOT sabotaging the Jupiter II mission and letting the Robinsons go on their way to Alpha Centauri. The Time Merchant then announces that if Smith does not get on the Jupiter II, the ship will not fly off course and will therefore be destroyed by a collision with an asteroid several months after liftoff. So Will is sent back to join Smith and try to convince him to get on the Jupiter II as he originally did.
The Promised Planet
The Robot suddenly announces that the Jupiter II is approaching Alpha Centauri. Everyone is suprised, and the ship lands on a planet, where they are greeted by a group of people who appear to be teenagers from Earth. It turns out that they are aliens who live like Earth-style hippies, and they are incapable of growing old. They want to age normally, and to do this they want to get the older members of the Robinson party to leave in the Jupiter II while the younger members can stay behind and be used in an experiment that will make it possible for them to do so. The aliens trick the older members of the Robinson party into leaving, but Will pulls a fast one on the aliens and the Jupiter II eventually returns to the planet, and Penny, Will, and Dr. Smith, who somehow passed himself off as a young person, are rescued.
Fugitives in Space
Poor Don West is sent to a prison camp.....WITH Dr. Smith! Don and Dr Smith are installing some equiptment, when Dr Smith comes across and alien prison escapee. The priosoner alien makes Dr Smith change jackets and then runs away. When the prison guards catch up with Dr Smith and Don, they arrest them for aiding an escape of a prisoner.
Space Beauty
The galactic showman, Farnum B returns as the producer of the Miss Galaxy Beauty Pageant. They want to Judy to be in the contest, she doesn't want to but Dr. Smith for forges her name and the fun begins.
The Flaming Planet
Dr. Smith disposes of a plant that has grown out of control, but once outside the plant attaches itself to the Jupiter 2. The plant apparently believe that Dr. Smith is its mother, meanwhile the ship is attached by a brave space warrior.
The Great Vegetable Rebellion
Doctor Smith uses the Space Pod to land on a planet that the Jupiter II is passing by. It turns out that the planet has evolved in such a way that plants are the highest form of life, and some of them are quite intelligent. One of these plants, a large carrot, captures Smith and tries to change him into a plant. The Jupiter II lands and the Robinsons and West come to Smith's rescue, only to be captured themselves. Eventually they thwart the plant creature and make their escape.
Junkyard of Space
The Jupiter 2 lands on a planet which serves as a junkyard. The Robinson's food supply is dwindling. So Dr. Smith tries to sell the robot and the ship in order to get food. can Dr.Smith be stopped.