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

The Crystallites hand pick Junior for a very short reign as their king; both Junior and Honk turn into green-furred monsters after ingesting a mysterious "coconut milk."

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.