George and Harold (the co-stars of the enormously popular Captain Underpants series) are in big trouble again! Their mean principal, Mr. Krupp, has demanded that they stop making comics about poop. Always resourceful, the boys decide to create an all-new graphic novel about a totally different subject: Pee!
Rip Van Tinkle started his career as an ordinary, everyday evil genis/inventor/bank robber. But when he awakens one morning to find himself transformed into a walking, talking puddle of pee-pee, he becomes determined to destroy every toilet in town. Will they terrifying Rip Van Tinkle and his smart-alecky cat Petey ruin restrooms for the rest of us? Or could this be a job for the amazing Super Diaper Baby?