Investigating the murder of the manager of the "Lausanne" agency, the criminal detective Anastasia Kamenskaya discovers a strange chain of hasty deaths involving creative and scientific workers. She has to deal with a mysterious firm that has its people in all law-enforcement agencies. At the initiative of the firm, Kamenskaya is removed from her duties and an official investigation is conducted into the circumstances of her cooperation with a major mafia boss, Eduard Denisov.