ages- 8+
George and Harold are best friends and trouble makers. They have created their own comic superhero, Captain Underpants and sell them to their friends at school. Their principal, Mr. Krupp, catches them during one of their practical jokes and blackmails them into doing good. The boys decide to hypnotize him to get out of being blackmailed. Quickly, they decide to make Mr. Krupp, their comic superhero, Captain Underpants. Then, he escapes before they are able to turn him back into Mr. Krupp. Mr. Krupp tries to save the world as the boys try to find him to un-hypnotize him.
This is the first book a a great popular series. It is funny and hilarious that a grown man is running around in his underwear believing he is a super hero.