Colonel of the Ministry of Internal Affairs Gurov participates in the arrest of a criminal who tried to rob a woman on the street. The detainee has a special sign: a tattoo in the form of a winged snake biting its tail. Exactly the same, according to the victim, was with the marriage swindler, who first started an affair with her, and then withdrew all the money from her account and disappeared. But it wasn't him who attacked her in the street... It turns out that there is someone with the same tattoo who, under the guise of a lover, robs gullible simpletons. A series of subsequent scams confirmed this version of the investigation. Gurov already guesses where to look for the criminal, but does not yet know how the upcoming fight will turn out...