Herbie is the new kid in school. He proves his bravery by going to a haunted house. Supernatural beings (a witch, a ghost, a creep, and Frankenstein) cause havoc, but prove to be no match for Herbie, his lollipops, or his magic.
The giant Mr. Horrible is a one-man crime wave, leaving Senator Goldwater and President Johnson at wits end. To help out, Herbie enrolls in a superhero school to become a licensed costume hero. Herbie did not graduate, and when his father threatened to become a costume hero, Herbie created the Fat Fury. Not a licensed, graduate hero, but he'd do. He wore red flannel underwear, a blue cape, a blue mask and a plunger on his head. The Fat Fury rescues the Statue of Liberty and defeats Mr. Horrible.