For generations, four Clans of wild cats have shared the forest according to the laws laid down by their warrior ancestors. But now ThunderClan is in grave danger. Rival ShadowClan is growing stronger, a traitor may be hiding in their midst, and rising tensions threaten every cat in the forest.
In the dark days ahead, ThunderClan"s fate will rest in the paws of an unexpected hero: an ordinary house cat named Rusty...who may yet turn out to be the bravest warrior of them all.