Sweet Anna is sent as a maid to the Vizys immediately after the fall of the revolution in 1919. Since the death of her daughter, Mrs. Vizyné has devoted all her emotions and energy to the "education" of the servants. Anna is sometimes pampered, sometimes humiliated. Her nephew Jancsika seduces the young girl, who wastes all her repressed love on him. Jancsika leaves him, and when Anna wants to leave the Vizys, Vizyné, in a fit of hysteria, blackmails her and holds her back. The morning after a house party, Anna murders her hosts.

Based on the true story of a Russian serial killer who, over many years, claimed victim to over 50 people. His victims were mostly under the age of 17. In what was then a communists state, the police investigations were hampered by bureaucracy, incompetence and those in power. The story is told from the viewpoint of the detective in charge of the case.

The story takes place in the Stalinist camps of the 1930s, where the main character, Gleb Nesterov, is trying to escape while they are starving and have no idea who has been captured or why. There is no trace of logic in the camp, although the engineer is obsessed with researching it, as it should be. From one day to the next, Professor Adrián is also captured and interrogated, and they want to extort a confession from him while humiliating him. Moral laws and norms have disappeared here, there is only humiliation, death and starvation.