Meet George and Harold, a couple of wise guys. The only thing they enjoy more than playing practical jokes is creating their own comic books. And together they have created the greatest comic-book superhero in the history of the elementary school -- CAPTAIN UNDERPANTS!

But George and Harold's principal, mean old Mr. Krupp, doesn't like their pranks or their comic books. And he's cooked up a plan to catch George and Harold and stop their shenanigans -- once and for all! Here's the story of what happened when the plan back-fired, and Captain Underpants leaped off the page to save the day!
(from the publisher)