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.

Fireheart, a full-fledged warrior cat, must confront questions of loyalty and identity as he faces the possibility of betrayal from within his own forest clan.

The four bears finally arrive at the legendary Last Great Wilderness, thinking it is the end of their long journey, but they discover that their true mission has really just begun.

The questing cats return to a forest devastated by the Twolegs, where they must find a way to convince their Clans to leave in search of a new home, even though they have no idea where they are going.

Onestar, leader of WindClan, introduces two young kittypets to the warrior code, the history of each of the Clans, and legendary battles that have been fought.

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

Leafstar struggles to maintain control of her Clan as she figures out how Skyclan can survive in the gorge.

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.

The end of the stars draws near. Three must become four to battle the darkness that lasts forever. . . .After countless moons of treachery, Tigerstar's Dark Forest apprentices are ready to lay siege upon the warrior Clans. As Jayfeather, Dovewing, and Lionblaze prepare to lead their Clanmates into battle, they await the arrival of the mysterious fourth warrior who is prophesied to help lead the Clans to glory.The darkest hour the Clans have ever faced...

After moons of strife, the forest cats have settled into five camps. But now the dangerous rogue Slash has kidnapped Clear Sky's mate, Star Flower, and made demands for prey that the cats cannot afford to meet. Desperate to save Star Flower, Clear Sky must convince the other groups—led by Tall Shadow, Wind Runner, Thunder, and River Ripple—to join forces. As Slash's attacks grow more vicious, one thing is clear: if all five groups can't...