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.

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.

Graystripe and his friend, Mille, are finally on their way. Finding the ThunderClan is a lot harder than they'd imagined, though.

Thrown into a river by a cruel human, a young tiger-striped cat fights to survive amid feral cats and other creatures near Roxville train station, aided by Mike, an eleven-year-old foster boy who is not allowed to have a pet.