A small, strong girl with a genuine vampire tooth: Wow, that's Polly Schlottermotz! Right now, Polly could really use a new vampire magic power, but her fourth canine just won't come out! Because Polly is in deep water: Aunt Winnie's houseboat is sinking, the Zappenduster family is about to fade away, and then a real whale appears in the canal. Together with her friends, Polly slides into a new wow-some adventure - and has to learn that the most important magic power isn't in any of her teeth...