Thousands of years ago, a powerful and malevolent force conjured a demon: a demon so evil that it could only be contained in the body of a ferocious bear, a demon determined to destroy the world. Only one boy can stop it ... Twelve-year-old Torak sees his father murdered by the bear. With his dying breath, he asks his son to make him a promise. Alone, wounded, terrified and on the run, Torak must now lead the bear to the Mountain of the World Spirit - a mountain that no one has ever found before. But can Torak keep his promise? A terrifying quest commences in a world of wolves, tree spirits and Hidden People, a world in which trusting a friend means risking your life.