Firestar, leader of the Thunder Clan, sets off on a harrowing journey to find a long-lost clan of cats that had been forced to leave the forest many moons ago. There is peace at last between the warrior Clans, and Firestar is proud of the strength and unity of the cats he leads in ThunderClan. But his dreams are haunted by wailing cats fleeing a terrible disaster. With unexpected help from an old kittypet friend, he discovers a shocking secret: StarClan,...

"As the new leader of ThunderClan, Bramblestar must prepare to weather a storm the likes of which the warrior Clans have never seen--and might not survive"--

"ThunderClan's leader, Bramblestar, has been behaving erratically after losing one of his nine lives, and suspicion is quickly spreading across Clan borders. And when a strange apparition sparks unrest in SkyClan and ShadowClan, each warrior must decide where their allegiances lie--with their Clan, or the warrior code itself"--

The four cat Clans, following a prophecy, finally reach their new home and go about the difficult work of setting borders and boundaries, and re-establishing contact with StarClan, the ancestor gods.

Despite the peace of the forest, strange visions drive a young WindClan cat named Moth Flight to leave her home on a journey that will change the future of the new warrior Clans forever.

New territory brings new troubles for the fierce cats of the warrior Clans, and former allies are acting strangely hostile. As divisions between the Clans grow deeper, Firestar's daughters face troubling decisions. The choices they make now could affect ThunderClan for generations to come...and with an unexpected enemy preparing to attack, their courage and strength will be needed more than ever if the Clan is to survive.

After the medicine cat has a dark vision during an already dark and uncertain period for ShadowClan, Tigerheart considers leaving the clan for good in order to save it.

At the edge of the Endless Ice, the four bears Ujurak, Toklo, Lusa, and Kallik reach Star Island, where a large group of bears is in trouble but believes Lusa is destined to help bring back the favor of the spirits.

Fireheart, the warrior cat, faces many challenges in his new role as ThunderClan deputy, with his apprentice resisting the warrior code, the clan leader weakening, and his sworn enemy Tigerclaw continuing to haunt the forest seeking revenge.

The warrior cat Fireheart's determination to uncover the truth about another warrior's death leads him deep into danger, and reveals secrets that test the strength of clan loyalties.