Emmy Addison is an ordinary girl--almost. If you don't count the fact that her parents are rich (very), her best friend is a boy (and a soccer star), and she can talk to rodents (and they talk back), she's very ordinary indeed. But she hasn't been that way for long . . .
It was only a few weeks ago that Emmy and her friends Ratty and Joe got rid of the evil Miss Barmy, the nanny who had nearly ruined Emmy's life--and the lives of five other girls who went missing. Miss Barmy is now a rat. How much harm can she do?