Investigator Samsonov works in the serial murders department. When he was still a teenager, a maniac killed his older sister using an industrial waste disposal machine. The criminal - a certain Khobotov - was found in hot pursuit, convicted, and then finished off by his cellmates. And now, ten years after those tragic events, Samsonov is entrusted with the investigation of a terrible incident: a young woman was brutally murdered in an abandoned factory in a similar hydraulic recycling machine. Samsonov takes up the investigation and tries to find out whether this is an old maniac or a new one? Very soon the “frostbitten” one makes himself known: he kidnaps the daughter of the head of the police department and invites Samsonov to play the game “Try to find it”...