The Robinsons come across a group of space hippies who are trying to destroy the planet the Robinsons currently inhabit. It is up to the Robinsons and Dr. Smith to stop them or they will all be doomed.moreless
Dr. Smith discovers another android machine in the middle of a dangerous fissure. 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 mistaken for toys.moreless
The Robinson family and Major West are imprisoned in their camp after being indicted to appear before a court for space crimes. As the trial begins, Dr. Smith's name begins to appear and it is not long before everyone realizes that all of the Robinson's "crimes" should be attributed to Smith, and he is indicted to appear before the court.moreless
Due to Dr. Smith's actions, the crew of the Jupiter II has had to land their ship on a alien planet which is run by cyborgs. The crew must rescue their crippled robot and then try to break free from the captors, even though the cyborgs promise them power and luxury for the rest of their lifes.moreless
Penny is given a gift by a thief on the run, who tells her to protect it for him. She and Dr. Smith discover that it leads them to a ring which, when worn, allows the person to turn anything to platinum, which Dr. Smith does. Unfortunately, the ring also turns their food into the metal too and food is always in short supply.moreless
Dr. Smith holds a seance to contact his Uncle Thaddeus. Instead a "spirit" creature is contacted and creates havoc for the Robinsons.
While the men are away, an alien creature stalks the Robinson women from the shadows. The girls just think it's a small dog that is to blame for raids on food and other mischief.moreless
The Robinson family banishes Smith from the Jupiter 2. He takes refuge in an abandoned spaceship where he finds a machine that can materialize anything. In an attempt to get back into the Robinson's good standing, he gives them the machine, which plays on the family's greed.moreless
The Jupiter 2 is pulled into a giant alien spaceship where there are advanced rock-like creatures. John and Don look for maps and equipment while Dr. Smith and Will look for trouble.