Moscow, 1975. In the Soviet Union, several cases of fraud were registered, the victims of which were women "with a position in society." The victims describe the signs of the criminal in the same way: a charming, intelligent middle-aged man, easily rubbed into confidence. After a suicide attempt by one of the defendants, professional detective Shmakov and senior police lieutenant Polina Novgorodtseva take on the investigation. A complicated case develops into a personal drama when Casanova meets fellow Novgorodtseva in order to pull off the usual trick with her, which this time develops according to an unplanned scenario.