Episode Title:Zombie Bananas / I'm YAY-OK You're Not YAY-OK.Episode Description:Zombie Bananas: A batch of toxic bananas has infiltrated the market, zombifying any primate who takes a bite, including Wally. Gus must travel to the bananas' source planet and find a cure for the zombie germ.
I'm YAY-OK You're Not YAY-OK: When Gus blames YAY-OK for his own mistake during a training exercise, Dr. Chimpsky sends them YAY-OK7, an updated replacement who is quick to assert his superiority over the original model.