George likes to write. Harold likes to draw. They figure all superheroes look like they're wearing underpants ? and so a new comic-book superhero is born. And this one's got Wedgie Power! The boys are just as creative in real life too. At the big football game, they put pepper in the cheerleaders' pom-poms, helium in the football, and itching powder in the coach's muscle rub. And Mr. Krupp, the mean principal, films it all! Now the boys have to behave, or else. That is, until their hypnotizing ring arrives. Then watch out, Principal Krupp!Series InformationWhen fourth graders George and Harold accidentally hypnotize their principal, Mr. Krupp, they turn him into Captain Underpants, the world's most underdressed superhero. All it takes is a snap of the fingers to let this caped crusader loose upon a world of talking toilets, lunchroom zombies, purple potty people, and more outrageous villains. Mr. Krupp has no idea what's happening ? which makes it even funnier, since he can't stand George and Harold and would never do what they command. But he always manages to save the day anyway, with thrills and laughs to spare.