Sergei Nazarov, who fled this southern coastal city as a disgraced, wounded diver, returned ten years later as a police captain. Everything here was familiar, everything was family. Sasha... Sweet girl, his only love. What a beauty she has become! And Sasha got into trouble. Her mother is missing. Captain Nazarov immediately understood that the matter was rubbish and Alla Gennadievna would never return to her home. All the signs indicated this: her bag, wallet, phone, glasses, without which, according to the daughter, she never left the house, were in place. But the most important thing that alerted the police was that the video cameras installed in the house were turned off and the recordings were erased...