Martin and Tim are out in Death Valley to fix Martin's ship, damaged by smog. The smog is causing rust-like spots. While Martin is off looking for some restorium, a material he needs to fix the rust spots, Tim tries on his space suit and fools around with his laser gun. Tim is spotted by the Farrow family, who think he's a Martian. Father Daniel is suspicious and fearful of Tim, but children Sally and Gerald are fascinated. Seeing that Tim is in trouble, Martin goes under cover as a prospector. Martin and Tim develop an idea that Tim should act like a Martian so that all the attention is focused on him, which will give Martin time to fix his ship. The problem is that Gerald finds the ship. Martin needs clandestinely to fix the ship then have Tim act like a friendly but powerful Martian who will fly the ship away, of course with Martin's assistance. They show the family that Tim really is a harmless Martian and let him go on his merry way without divulging his secret to the authorities.
—Huggo