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

In the tenth epic novel of Captain Underpants, Harold and George must once again battle the terrifying Turbo Toilet 2000. With the fabric of time torn, our heroes find themselves in a race to repair the timeline and restore order. Captain Underpants must prevent Tippy Tinkletrousers from taking over the world with his fearsome Robo-Boxers. The daring duo must face their greatest obstacles yet in an adventure filled with time travel, laughs, and plenty of underwear. The Radioactive Robo-Boxers are back in the tenth full color book in this #1 New York Times bestselling series. 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 Tippy Tinkletrousers and his time-traveling hijinks prevented George and Harold from creating Captain Underpants in the first place! Now, having changed the course of human history forever, they'll have to figure out a way to change it back!