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

When George and Harold find themselves transformed into evil zombie nerds in a postapocalyptic world, their usual superhero is nowhere to be found—because their time-traveling nemesis has erased Captain Underpants from history. This forces the two friends to embark on their most desperate and chaotic adventure yet, relying solely on their own wits and signature Flip-O-Rama antics to repair the fractured timeline. The stakes have never been higher, plunging the series into a hilariously grim scenario that turns the familiar formula on its head.

Pilkey masterfully escalates the series' signature absurdity while weaving in a surprisingly complex time-travel plot that longtime fans will appreciate. The narrative cleverly explores the consequences of altering the past, providing a fresh and high-stakes challenge that tests the limits of George and Harold's friendship and resourcefulness. Readers who thrive on the series' blend of potty humor, comic-style illustrations, and heartfelt camaraderie will find this tenth installment a wildly satisfying and pivotal chapter in the epic saga.