Chronicles of ancient darkness

6,000 years in the past, twelve-year-old Tarak and his guide, a wolf cub, set out on a dangerous journey to fulfill an oath the boy made to his dying father--to travel to the Mountain of the World Spirit seeking a way to destroy a demon-possessed bear that threatens all the clans.

When Wolf is taken by the Soul-Eaters, Torak must infiltrate their clan to bring him back.

Torak swears to avenge the killing of one of his closest friends. To fulfil his oath he must brave the hidden valleys of the Deep Forest, where the clans have reverted to the savagery of an earlier time. Here, Torak finally learns why he is the Spirit Walker and discovers the true cost of revenge.