The Revolting Revenge of the Radioactive Robo-boxers (Captain Underpants #10 PB)

Dav Pilkey

When we last saw our heroes, George and Harold, they had been turned into evil zombie nerds doomed to roam a devastated, post-apocalyptic planet for all eternity. But why, you might ask, didn't the amazing Captain Underpants save the boys from this frightening fate? Because Tippy Tinkletrousers and his ...