Edward Changeover is a fourth grader...who also happens to be the world's only Norwegian werewolf. When he overhears his classmates talking about a mysterious purple monster wrapped in fog that hides under the bed, he feels a strange curiosity. But when it turns out that the Australian boogieman (A.B.) is real and coming after him, Edward must seek the advice of a monster expert-his friend Ali's mom-if he has any hope of discovering who the beast...