Oleg, nicknamed Soulless, head of the special investigations department, managed to become attached to his employee Nadezhda, whom everyone lovingly called Mouse. What a shock the news was for everyone that she had been killed! The department began an investigation with the help of a permanent consultant - Oleg’s friend, writer Alisa Vertinskaya, working under the pseudonym Hel. As it turned out, Nadya’s circle of acquaintances was very narrow. It was mostly made up of acquaintances from the center for helping women victims of violence. Nadya also had a tragedy in her past, after which she underwent rehabilitation. Oleg and Hel learned that there was a scandal in the center then, the echoes of which have not subsided to this day...