Catt, a cat, and Simon Cheddar, a mouse, land in the jungle after a skydiving school mishap. The two barely escape the diabolical monkeys, capturing and selling animals to a zoo, by mailing themselves home. Back in Sweet Meadows, they contact their friends and classmates to devise a way to rescue their trapped friends-only to deliver them straight into monkey headquarters. Patty Porter, the pig and Freddy Flickerson, the frog, and others return for the crazy caper rescue of their new friends from the Banana Brothers. Join your favorite Superhero School duo in their second adventure to save the day before their next class!