In front of the teacher and classmate, a young schoolgirl Katya Khromova was abducted. Suspicion falls on the rapist Marat Petrov, who lives near the scene of the incident, but he dies during the arrest. Meanwhile, Katya's parents, Konstantin and Galina, receive a call from the kidnappers demanding a ransom.

The Sedykh group is investigating the reasons for the systematic beating of Ksyusha Malygina. The girl's mother, Galina, blames Ksyusha's ex-husband and father David Hakobyan for the incident, but he, on the contrary, is sure that her daughter has become a victim of her stepfather Igor. Interrogating the girl's stepfather and father in turn, Bobrova and Pankratov understand that each of them had their own reasons for committing a crime - both wanted the girl to stay with them.