Andy makes a presentation to his class about Martian life and architecture, and is sent to the school counselor, Mr. Bridges. Martin uses thought transference to let the bored teacher and Brennan experience life on Mars.
Martin hits Brennan and his son Brad with a personality reverser ray to make them more friendly.
After Brennan tries to break into the garage to see the spaceship, Martin shrinks the spaceship, but after it returns to normal size, Chump the chimp flies it around town before Martin regains remote control.
Okie misses his animal friends on Mars and won’t eat. Martin gives him a device to communicate with Earth animals.
Uncle Martin invents a robot that does everything you tell it to do. But when Uncle Martin goes to another country, Officer Brennan's son Brad steals the robot and tries to make money from it.
Andy sends Katy back to ancient Egypt 35 BC using Uncle Martin’s new time machine. When Katy is returned to the 20th century she brings Cleopatra back with her.
Andy feels homesick so he steals the spaceship for a trip to Mars with Katy. When he finds out, Martin programs the ship to land at an amusement park in Futureland.