Maggie is working at the Wild at Heart clinic when a greyhound with an unusual injury comes in. Its owner won't give her full name or address. The next day a kitten arrives, badly injured from a greyhound attack. Maggie's determined to find out what's After treating an injured greyhound at her grandmother's veterinary clinic, fourteen-year-old Maggie learns about the abuse of greyhounds in the dog-racing industry and vows to put a stop to it.