To see what it is like to be superheroes, the Funhouse Friends are taken by Funny to the superhero world of Herotropolis. They learn what their powers are and get their superhero codenames from the superhero Captain Clarabelle as they form the Fantabulous Five + 1. Wanting to have superpowers of his own, local scientist Ludwig Von Drake invents a supersuit that goes berserk and steals everyone's powers.