Eliot and Kaytoo are about to go and call for Mimi to walk to school with them. But Aunt Margot tells them that Mimi cannot come to school today because she is poorly. On the way, they meet a little boy who is the spitting image of Mimi. For Eliot there is no doubt: Aunt Margot the witch has turned Mimi into a little boy! Eliot and Kaytoo are going to do their best to return their friend to normal.