Disaster has struck at the heart of RiverClan, leaving its warriors and its new medicine cat apprentice scrambling to protect their Clan-even if it means lying to the others. But at a time when the warrior code itself is shifting, no Clan is truly at peace... or truly safe.

"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,...

While Frostpaw takes refuge in ShadowClan as Splashtail seizes control of her home, Nightheart returns to ThunderClan and to a complicated reunion with his mate Sunbeam whose efforts to fit in as ThunderClan's newest member are hampered by her treacherous mother.