Junior and Barney land on a planet controlled by a huge computer attempting to absorb their minds.

While stocking a spaceship with plenty of breakfast, lunch, and dinner supplies, NASA food specialists accidentally push the launch control button.

Lantana enlists the Space Nuts' help to recover her robot control belt, which has been stolen by Mercurial.

Junior, Barney, and Honk contend with mad scientists, a robot, and a giant alien monster that stole their antenna.

While Junior and Barney explore a strange planet, the beautiful Queen of the Serrians becomes imprisoned high in the Tower of Tagot, so the Space Nuts come to her rescue.

Junior decides to run away into the woods, where he meets some alien men who believe him to be their secret leader.