In a city park, a young woman was killed right next to the stroller in which her little daughter was screaming. Investigator Mark Sadovnikov is pursuing the most obvious version: the crime was committed by the victim’s husband Valery Krupin. Violetta's blood was found on the sleeve of his jacket. As it turned out during the investigation, Krupin had long loved someone else and wanted to get a divorce. But the suspect’s mistress insists on one thing: Valera did not kill. In addition, it turned out that Violetta is not an angel either, and her mysterious respectable admirer had difficulty putting up with the coldness of the unapproachable beauty...