The Amazing Maurice and His Educated Rodents (Discworld Series #28)

In a strange and magical place called Discworld, a talking cat recruits a group of intelligent rats and a boy with a pennywhistle to cash in on the Pied Piper legend. It's a perfectly planned con job, and it runs flawlessly. Until the day they hit Bad Blintz: the Wrong Town at the Wrong Time -- where food is scarce and rats are hated, and where a deadly evil lurks beneath hunger-stricken streets.

With over 23 million books in print, Terry Pratchett's Discworld novels are an international phenomenon. The Amazing Maurice and His Educated Rodents is his first novel for young readers set in Discworld.