Penn doesn't want to celebrate Christmas because his parents won't be there. However, he is sent to the North Pole to fill in for Santa Claus to save Christmas.

When Penn, Boone, and Sashi are zapped into a world where everyone has superpowers, Penn learns that you don't have to have superpowers to be a hero.

When the team is zapped into an alternate world where Penn is president, Sashi is a general, and Boone is a Supreme Court justice, Boone finds himself on the most popular game show in the galaxy where he must plead his case and compete against Rippen in an outrageous contest that will determine the fate of the Earth. However, Boone has a fear of public speaking.

Larry becomes an acting part-time villain as he substitutes for the ailing Rippen. The team's mission is endangered when Penn takes pity on Larry.

Penn and his team return to the cowboy world and get help from Sheriff Scaley Briggs to stop Rippen and Briggs' daughter Amber from rustling Cow-o-saurs.

Penn and his team return to the underwater world and must find a royal fish named Rufus.

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.

After a recap of the events of the first season. Penn, Sashi, and Boone are sent to a pirate world where whales act as the ships. Penn must get to a treasure before Rippen does, but finds himself teaming with a competitive female pirate in the process.

In a world that is a Rock, Paper and Scissor version of Game of Thrones, Penn's team face a siege by the Scissorian army.

Penn has to take care of The Chinchilla -- which causes problem on their return to Plush Toy World.

Boone is kidnapped and Penn and Sashi must solve the mystery and find him.