Kittypet Hawk joins the four Clans of the forest. Not long after joining, Hawk is enveloped in a long and dreadful prophecy, one that involves a cat Hawk loves. Soon Hawk becomes hungry for power, and soon he gets it, and a lifelong enemy.

Cloud, Lightning, Rain, and Snow have started Clans. Against their mother's will. So a peaceful few moons go by, until Sky, their mother, moves in and tries to take over the Clans. Sky starts her own "Clan", of rogues. Can the Four finally settle in?