Penn, Boone, and Sashi are zapped into an underwater world to save a society of fish people, but their mission gets complicated when Penn finds out that Boone is afraid of water.

When Penn and his team are zapped into an old west cowboy world where the cowboys ride dinosaurs, the town sheriff joins them on their mission to prove he still has what it takes.

After Penn and his team are zapped into a desert world filled with flying carpets, Penn begins to question Boone's abilities as the team's part time wise man.

Penn's origin story is revealed in a flashback to his first day of high school when he learns his parents are part-time heroes instead of insurance salespeople.

Boone gets a bad report card from Phyllis, making his parents mad. He tries to fix this while on a mission in the Giant Monster World.