Mistkit has always been the helpful mercyful cat. Unlike her brother Rainkit, always wanted to follow in the path of streangh. Mistkit finally becomes Mistpaw, medicine cat apprentice of MistClan. She always stood watch for her brother Rainpaw, mostly because his mentor was the desendant of the evil Tigerstar, Tigertooth. One day while Mistpaw and Petalcloud are looking for herbs she saw Tigertooth battling Rainpaw, training him too hard. She is horrified at this and finds out something unbelieving about what Tigertooth also did, Rainpaw is becoming more and more like Tigertooth everyday. Mistpaw is very worried now, what will she do? Give up the dream of being MistClan's medicine cat and save the Clan? Or let her Clan be destroyed by the clutches of blood?