1946, Leningrad. The police are fighting crime that covered the city after the war. After an undeserved sentence, the literature teacher Danilov lost everything: his job, wife, and daughter. He is trying to get justice and revenge on those who have distorted his life. But it turns out that the teacher is increasingly immersed in the criminal world of post- war Leningrad and gradually turns into one of the most intelligent and dangerous criminals.