The fate of all Clanhood hangs in the balance. After killing Harelight and pronouncing himself leader of RiverClan, Splashtail's thirst for power has only grown.

Soon his greed threatens the safety of not only RiverClan but all Clans. Yet Splashtail's trickery knows no bounds, and the Clans find themselves in more danger than they could have imagined. Only one thing is certain: They will have to work as one to defeat Splashtail before he tears them apart.