After challenging the undefeated Space Gorillas to a match on the popular game show "Galactic Laser Blast!", Gus decides the only way the Monkeys can win is to bring in a ringer—YAY-OK.

Wally finally gets his own pet: Trixie, a toothy beast with an appetite for EVERYTHING, from the monkeys' food supply to the ship itself. As much as it hurts Wally, insatiable Trixie must be stopped.

Gus and Wally only need one more badge before they receive the prestigious GASI Red Tassel of Achievement, so when the opportunity arises to save a stranded princess, the boys jump at the chance.

YAY-OK is put in charge by Dr. Chimpsky to decide whether Gus or Wally should be in charge of their money, after they blow all of GASI's budget on a shopping spree.

Wally has a flea who eats almost everything on the ship and hypnotizes him attached to his head.

Gus and Wally keeping an animal.

Gus and Wally compete to become a sidekick.