Mystical thriller based on Aleksey Birger's novel of the same name. Winter of 1946. A young officer of Cavalry Sergey Vysik after demobilization is appointed the head at Criminal investigation department near Moscow. He is charge of an abandoned stud farm, some villages nearby, a factory, workers' town and railway warehouses where trophies from Germany and some humanitarian loads from soviet governments are kept. When Vysik came to Mitrohino village where there was a local police department, he was going to solve some problems there - someone stole horses from the stud farm and there was a series of cruel murders of a former head of police department, night guard, some local residents and "a special person" from Moscow. Moreover, all the residents are terrified by gossips that a horrible elusive werewolf committed all these crimes. Regardless of his boss' order to ignore all the prejudice, Vysik wants to find out what is that force keeping all the people in terror.