Toshik turned sixteen, and Vika, his sister, turned six when their parents disappeared. The guys learned that their dad is actually a hunter of evil spirits, and their mother is a guide to the world of the dead! Many years ago they escaped from the City of Sleepers, they wanted to live a simple human life... And now Toshik and Vika go to that very City of Sleepers to find their parents. They need to be extremely careful: the Forgotten Beast went hunting, huge, shaggy, gaining courage and strength. And he follows their trail. Will the brother and sister have enough courage and strength to finish what they started?