Struggling to unite the Wild and Leashed Packs for mutual safety after a violent attack, Lucky is cast out by a ruthless Alpha and encounters treacherous elements in the forest and ruined city, which is rapidly enveloped by a poisonous black cloud.

After Lucky and Alpha reach an uneasy peace, the newly united Pack sets off to find a safe home far from the Fierce Dog camp and encounter another group of canine survivors who prove to be dangerous adversaries.

When Firestar's grandchildren, Hollyleaf, Lionblaze, and Jay feather, finally discover who their true parents are, there are dire conseqyences for ThunderClan and the warrior code.

"Frostpaw was told to trust no cat, but a brutal attack has left her gravely injured, and she'll need to depend on someone. When help arrives in the form of a young warrior, she convinces him to protect her as she follows StarClan's cryptic directions toward the roots of RiverClan, where Riverstar has promised she'll find the answers she's been so desperately seeking. Back at the lake, the tension between ShadowClan and its neighbors might be easing,...