There is a killer at work in the forest. A mysterious avenger whose family died in a forest fire caused by a careless group of tourists. He knows no pity. He takes away more and more human lives - and does it with truly bestial, inhuman cruelty. How does he manage to disappear every time, leaving no traces? Neighboring towns are full of dark rumors: the one who lurks in the forest thicket is not even man. But detective Mac Schrider and his assistant Ty Greenwood, leading the investigation, do not believe in legends. They believe: the killer is not a demon or a ghost. He can and should be made to pay for what he did...