When a body is found at a mountain pass near the German-Austrian border, two detectives are sent to investigate. For German detective Ellie, this will be the first real challenge of her career. Her Austrian colleague Gedeon, on the other hand, is a detective who has lost his ambition in his work. Soon, more murders will occur, resembling victims of pagan rituals. Everything seems to be part of a larger and more sinister plan. Ellie will find herself under increasing pressure to understand the motives of the unstable killer. Will she be able to stop the murderer under this pressure? The murders will take Ellie and Gedeon into the dark valleys of the Alps, deep into the paranoid world of the killer.