Lord Peel captures the Monkeys and intends to make them pay for turning him from a mild-mannered alien who happens to look a lot like a banana, into an embittered super villain obsessed with revenge.

Gus and Wally have a surprise for YAY-OK: they have located his estranged father. But YAY-OK has mixed emotions, as it turns out his dad is actually a doomsday device that had been powered-down for the good of all mankind.

On GASI's "Switch Day," where everyone gets a new partner, the monkeys both end up getting a gorilla as their partner.

Gus teaches Wally about survival, while on a stranded planet.