ThunderClan's darkest hour is upon them and Fireheart, the warrior cat, must protect his clan from a threat unlike any the forest has ever seen, as the time comes for prophecies to unfold and heroes to rise.

For generations, four Clans of wild cats have shared the forest according to the laws laid down by their ancestors. But the warrior code has been threatened, and the ThunderClan cats are in grave danger. The sinister ShadowClan grows stronger every day. Noble warriors are dying-and some deaths are more mysterious than others. In the midst of this turmoil appears an ordinary housecat named Rusty... who may turn out to be the bravest warrior of them...

"When a storm-tossed river sweeps Ripple away from the park he's always known, he commits himself to the life of a peaceful loner. Still, as his new island home starts to become a sanctuary for other rogues, he can't help but feel responsible for their safety, and for the community--and Clan--they are beginning to build. But when an old friend from the park resurfaces with terrible news just as the forest cats' fights begin to escalate into bloodshed,...

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.

Bluestar, a warrior of ThunderClan, struggles under the weight of a prophecy that promises her glory as Clan leader, but also spells out her ultimate demise.

"Yellowfang is a loyal ShadowClan cat through and through--but she is haunted by a dark secret from her past that could threaten the future of the warrior Clans"--

"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"--

Sent on a journey that could change the fate of all of the warrior clans, Hawkpaw is given the warrior name of Hawkwing. As deputy of SkyClan, he must find the kin of Firestar, the cat who once brought their clan back from obscurity.

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.

Gravely injured, Frostpaw places her trust in a young warrior, convincing him to protect her as she follows StarClan's cryptic directions toward the roots of RiverClan, where she hopes to find the answers she so desperately seeks while staving off a war between the clans.