Erin Hunter

After the warrior cat Clans settle into their new homes, the harmony they once had disappears as the clans start fighting each other, until the day their common enemy--the badger--invades their territory.

As they journey home to warn their clans of the coming destruction, the six cats, guided by StarClan's prophecy, meet an unfamilar tribe of cats with their own set of beliefs--and their own mysterious prophecy.

"With an impostor leading ThunderClan, threatening to exile any cats who challenge him, a small but growing group of cats must find a way to expose the truth and return ThunderClan's rightful leader-before the tensions among the Clans erupt into war"--

The warrior cat Clans arrive at their new home and set about exploring and fighting over the unfamiliar territory.

As Dovepaw, Jayfeather, and Lionblaze strive to understand and fulfill the prophecy that promises them great power, the cats of the Dark Forest begin to teach battle skills and techniques to different Clan cats through dreams.

Three young bears of different species--one black, one polar, and one grizzly--travel on a perilous quest to the Northern Lights, escorting a shape-shifting grizzly cub whose destiny will affect them all.

For generations, four clans of wild cats have shared the forest. When their warrior code is threatened by mysterious deaths, a house cat named Rusty may turn out to be the bravest warrior of all.

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.

When Firestar's grandchildren, Hollyleaf, Lionblaze, and Jayfeather, finally discover who their true parents are, there are dire consequences for ThunderClan and the Warrior Code.

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.