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.

Shortly after leaving their original crash-site planet, Smith spots a familiar star and, in an amazing show of stellar navigational skill, calculates the course to get back to Earth. He extracts a promise from Don and John that they'll return to Earth, or else he'll destroy his navigation data. They agree, but inform the family at dinnertime that they are headed for Alpha Centauri after all, mainly because the Earth is on the other side of the Sun (how do they know that? - do they know the date? And besides, from Alpha Centauri, Earth revolves clockwise, visible all the time). Smith changes course 180 degrees, then clumsily jettisons most of the fuel. They reach a refueling barge, one of several that Alpha Control put out in 1996, top up the tanks, and resume course for Alpha Centauri, not knowing that they've picked up a tailgater who follows them after Smith reverses course to Earth again. The alarm goes off in the night, and they expend a lot of fuel pulling away from the Eart

Due to Smith's actions the crew has had to land their ship on an alien planet which is run by cyborgs. Meanwhile the crew try to break free from the captors who promise them power and luxury and they have to save their robot who was crippled by a ray gun.

The Robinsons are trapped on a fog-shrouded planet.

A circus threatens to exhaust the Robinsons’ dwindling food supply.

The Galaxy Tribunal of Justice contacts the travelers to tell them they will be tried for crimes committed in space.

Dr Smith is provided with a female robot who declares that she is his, forever.

Smith wants John to enter fight promoter Myko’s intergalactic boxing tournament.

An intergalactic thief forces Will to join his search for a long-lost princess.

Jeremiah Smith plots to liquidate his doctor cousin and claim the family fortune.

Dr Smith is mistaken for a notorious outlaw.

Smith is transported to a hellish place where he becomes the terrified tool of a satanic stranger.

The robot is being used to help create a sinister army of machines.

An alien plans to drain all emotions from the Robinsons.

The Robinson women and Dr Smith become involved in a war between the leaders of two alien civilizations.

Will is green! Smith must fight the evil Urso to restore Will’s normal color.

Will learns the meaning of chivalry and honor when he serves as page to a knight-errant.

Will and Smith are trapped in a four-dimensional toyshop, where a toymaker mistakes them for playthings.

Will and Dr. Smith pursue the first mate who marooned Admiral Zahrt on their planet.

Smith finds the golden hammer of the Norse god Thor and blunders into a twilight zone of the gods.

Smith is keen for the job of sorcerer’s apprentice after learning that a space magician’s rocket ship can reach Earth in a few hours.

Smith is lured into a tomblike cave, where he falls under the spell of a computer.

A space pirate demands that Dr Smith lead him to a buried treasure.

The Robinsons place their lives in jeopardy when they become involved in a revolt of half-human androids.

A female warrior captures the Robinson party and puts the men to work preparing for the arrival of more conquering colonists.

Will and Dr. Smith try to repair the robot, which has grown to the size of a house.

An alien scientist gives Will 24 hours to teach his androids how to act like humans.

To provide themselves with a leader, tiny mechanical men interchange the personalities of Smith and the robot.

While exploring a mysterious cave, Will is transported through space to a haunted Scottish castle.

Aliens enlist Dr Smith’s help to obtain a valuable amulet that could destroy the galaxy.