From the bestselling team of Mac Barnett and Matthew Myers comes a hilarious tale of sibling rivalry, moral complexity, and disgruntled monsters, perfect for sharing with your own favorite rule-breakers! Ian likes rules. His sister, Jenny does not. And when the woodsy vacation house where their family is spending the summer comes with a posted set of rules, it's a certain recipe for disaster: Brush your teeth. Make your bed. And never, EVER, open the red door! "Barnett focuses his inimitable blend of energy and fiendish imagination on children's fascination with the rules.... No solemn moralizing, just a rib-tickling, slightly subversive read-aloud." --Publishers Weekly Don't miss these other books by Mac Barnett! Billy Twitters and His Blue Whale Problem Chloe and the Lion How This Book Was Made Oh No! (Or How My Science Project Destroyed the World) Oh No! Not Again! (Or How I Built a Time Machine to Save History)