The protagonist of the story is Mezentsev, the head of the criminal investigation department. But one day, he finds himself on the other side of the barricades. Mezentsev becomes the prime suspect in a case involving the murder of his partner. He is suspended from duty until the circumstances are clarified. In order to restore his reputation and achieve justice, he begins his own investigation. At the same time, Andrei needs to figure out why his loved ones are against him and are not eager to help him get his life back on track.