Two mischievous kids hypnotize their mean elementary school principal and turn him into their comic book creation, the kind-hearted and elastic-banded Captain Underpants.

Two mischievous kids hypnotize their mean elementary school principal and turn him into their comic book creation, the kind-hearted and elastic-banded Captain Underpants.

When the world is threatened by an evil supervillain, a teenager and his mentor team up to stop him.