Fireheart, the warrior cat, faces many challenges in his new role of ThunderClan deputy as his apprentice, Cloudpaw, resists following the warrior code, Bluestar weakens, and Tigerclaw continues to haunt the forest seeking revenge.

As Jayfeather, Lionblaze, and Dovepaw continue trying to understand the mysterious prophecy that binds them, Jayfeather receives a desperate plea for help from the Tribe of the Rushing Water.

Forced to leave her home, Sasha quickly grows tired of life on her own but she is not sure that joining ShadowClan, led by Tigerstar, would be a better choice.

Sasha return to the forest to raise her kits but fears that Tigerstar will return.

Before there is peace, blood will spill blood. The Clans have finally arrived in their new home, and now they must struggle to establish territories and learn the hidden dangers of this unfamiliar world. Most important, they must find a replacement for the Moonstone--a place to communicate with StarClan. But more than one cat is harboring sinister plans that could lead to violence and darkness, and as the warriors wait for a sign, they begin to realize...