Norwegian police inspector Sarah Geringen has been acquitted after a year in prison on charges of white-collar crime. On the day she is about to be released, a new blow falls on her: her father is brutally murdered. Before his death, he was brutally tortured, his hands were mutilated, a key was found in his stomach, and his corpse was sprinkled with a strange white powder. Sarah's police chief invites her to search for the killer. However, according to the law, in the event of incidents with relatives, this is unacceptable, and he formally appoints a young officer, Adrian Coll, to lead the investigation. This cooperation is bringing first successes. The proactive Call draws Sarah's attention to important details, and soon they find themselves in an old mansion lost in the forest. From here begins Sarah's challenging journey to unraveling a terrifying family secret.