Svetlana goes in search of her adopted daughter, who left to look for her real parents and disappeared. At the same time, in this resort town, a thirteen-year-old girl shoots her sleeping family - her mother, father and grandmother - and then tries to hang herself. A neighbor comes running to hear the shots and pulls the girl out of the noose. The head of the district police entrusts the investigation of the high-profile case to investigator Elvira Barayeva.