The Revolting Revenge of the Radioactive Robo-Boxers (Captain Underpants #10 HB)

Dav Pilkey

A world without UNDERPANTS?!!! When we last saw our heroes, George and Harold, they had been turned into evil zombie nerds doomed to roam a devastated, postapocalyptic planet for all eternity. But why, you might ask, didn't the amazing Captain Underpants save the boys from this frightening fate? Because...