Craig and June Robinson, with their teenage children Tim and Tam, are the crew of Earthís first Space Station One. They intercept a distress call from the asteroid Orious, and Tim and Tam take one of the two spacemobiles to see if they can help. The advanced humanoids inform them that Gorko, an alien criminal, is threatening to turn their planet into ice from his asteroid Karnos. The two teens take two scientists to Gorkoís asteroid and put him and his raiders in the deep freeze using the criminalís own weather controls. The Robinsonís get headphone translators which can interpret alien languages.
Synopsis: Tim and Tam take a spacemobile to help an Earth crew stranded on an asteroid. The men had been taken prisoner by the subhuman clay men. Tim figures out water is harmful to them and the two Robinsons help the Earth crew escape back to their rocket.