Sparrow is trying to cope with his new responsibilities - after all, he is now the only healer in the tribe. Lionblaze devotes all his time to raising and mentoring his squire. Dovewing hones her unique abilities, trying to use them for the benefit of ThunderClan. But the dark shadows of the past that have haunted the Thundercats for many moons still lurk deep in the Dark Forest. One of the ThunderClan cats is visited in a dream by a mysterious visitor, promising power over the entire forest, and this will change the future of the Clan in a way that no cat could have foreseen.