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.

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.

After the SkyClan returns to its rightful place among the warrior clans, not all the cats are convinced this is where the SkyClan belongs, leaving the clans' fate uncertain.

Jayfeather and Lionblaze are prophesied to be two of the three cats who hold the power of the stars in their paws. Now they must wait for a sign from StarClan to tell them which of their Clanmates will complete the prophesy. Soon a StarClan warrior will visit a new ThunderClan apprentice, and the lives of the three chosen cats will be forever linked.

The battle for control of Antora continues, and Simon and Kestra have been forced apart; Kestra is a prisoner in the cursed All Spirits Forest where Loelle wants her to use her growing power to heal the land and bring it back to life, while Simon has been made king of the Halderians, but is surrounded by men whose loyalty is uncertain and who fear his connection to Kestra of the hated Dallisor family, and the evil Lord Endrick.

Escaping to the wilds of Scotland to hide from a deranged suitor, Fiona MacEnroy is captured by a fierce stranger who takes her to his sinister keep, where she finds a safe haven and love with the very man who is using her to protect his clan from the invading Scarglas.

A shy, bookish boy is pulled into an underground land called Nebula and asked to lead a kingdom in its fight against darkness.

"The warrior cat Clans have enjoyed many moons of peace and prosperity--but a dark season approaches, and those days will soon be over. Guided by a mysterious vision, the young apprentice Alderpaw of ThunderClan must go on a dangerous journey...a journey that may be the Clans' only hope." --

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.

As Hollypaw, Lionpaw and Jaypaw, grandchildren of the legendary Firestar, continue their training to be warrior cats, each is haunted by a different internal struggle that could lead to trouble for all Clans.