內容簡介
Double Trouble! George and Harold’s time-traveling Purple Potty has landed them in a strange, backward universe. The Purple Potty People — Evil George, Evil Harold, and Captain Blunderpants — are on a mission to take over our world, and nothing’s going to stand in their way. Can George and Harold handle this mess on their own, or will they need Captain Underpants to swoop in and save the day?
