Lizzie Lewis hates breakfast. She'd rather eat candy and other sweet treats. But then Mama brings home a new box of cereal for Lizzie to try--magic cereal. With one bite, she finds herself shrunk down to a few inches high and entering the world of Breakfastland, where mountains are made of marshmallows and palaces are made of pancakes. There she meets the Chookamooks, tiny mouse-like creatures that help make breakfasts for the whole world. Can the Chookamooks teach Lizzie that breakfast isn't so bad? And can she help save Breakfastland from the evil Dr. Darktooth?