In a series of sexual crimes, detectives suspect a police officer - Sergei Streletsky. But Sergei's innocence proves the commission of a new crime, and now the detectives need to save the victim from the hands of the killer.

Absolutely rape. The detectives are sure that this is Igor Volkov, who was previously involved in a similar case - the same "handwriting" of the crime, but as then there is no way to prove Volkov's involvement. But this time the detectives won't just give up and punish the criminal.