Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers

This installment in the wildly popular Captain Underpants series plunges George and Harold into their biggest predicament yet. A time-traveling villain has altered history, preventing Captain Underpants from ever existing and transforming our heroes into evil zombie nerds in a devastated world. Full of Dav Pilkey's signature irreverent humor, flip-o-ramas, and comic book sections, this book is a fast-paced adventure that explores the consequences of changing the past. It's perfect for elementary readers who love silly stories, superheroes, and a good dose of mischief, while subtly reinforcing themes of friendship and problem-solving.