In the heart of the forest, the uneasy harmony between the four warrior cat Clans is in graver peril than ever before. ShadowClan has chosen Tigerclaw – now Tigerstar – as their new leader, and Fireheart fears that he still harbors dark plans for vengeance on his old clan. With the forest on the brink of battle, in which all the warriors must fight for their home and clan, the time has come for Fireheart to face his destiny.