, George and Harold face an unusual adventure that serves as both a sequel and a prequel. While the villainous (formerly Professor Poopypants) returns for revenge with a time-traveling robot, the heart of the story is an extended flashback to George and Harold’s first days in kindergarten. Plot Summary
Tippy Tinkletrousers’ story is one of the series’ most poignant. He represents the fork in the road: the innocent child who could become a monster, but chooses not to. After the adventure, George and Harold use a time-travel “do-over” to ensure Tippy grows up in a world where his name is never mocked—effectively erasing Professor Poopypants from existence. captain underpants tippy tinkletrousers