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. Fireheart's traitorous enemy Tigerclaw has been vanquished and exiled from ThunderClan -- but Fireheart can't shake the feeling that he's lurking out there in the forest, waiting for the chance to strike. That's not the only problem facing the young ThunderClan deputy in these blazing summer months, as he struggles to handle ominous omens, adisrespectful apprentice with a shocking secret, and a devastated Clan leader who is a shell of her former self. Meanwhile the forest gets hotter and hotter . . . and everyone braces for the coming storm..