A cat named Tigerpool is sent to gain the trust of a cat named cloudlily so she can kill her. Tigerpool dosen't know how evil cloudlily is, even when her father Shadowfoot tells her so. She closely befriends cloudlily, and when her father commands her to kill the evil cat, she runs away. Will tigerpool have to learn the hard way not to doubt cats so much, or will a special cat save her life.....? but still, not every cat can be trusted.