Allegiances are shifting among the Clans of warrior cats that roam the forest. With tensions so delicately balanced, friends can become enemies overnight, and some cats are willing to kill to get what they want. Fireheart is determined to find out the truth about the mysterious death of the former ThunderClan deputy Redtail. But as he searches for answers, he uncovers secrets that might be better left hidden. In the heat of a blazing summer, Fireheart struggles to handle sinister omens, an apprentice with a shocking secret, and a devastated Clan leader who is a shell of her former self. And as the forest gets hotter and hotter, every cat braces for the coming storm....