Everyone treats Hector like a joker and a sidekick. Well, those days are over. Now only Hector can save the day—if he can survive swarms of sharp-beaked midget flying dinos, smart-aleck flying horses, angry armies in their undies, a really really bad hypnotist, and a duel with deadly toilet plungers ... just an ordinary day in the tighty-whitey world under our own!

Praise for Underwhere:

“For readers who find wedgies, mooning and the like intrinsically funny, this book is good news.”—Publishers Weekly

“Wacky characters, wisecracking and alimentary humor to satisfy even jaded Captain Underpants fans.”—Kirkus Reviews