Wherever Nadezhda Lebedeva goes, something is sure to happen! She just went with her husband to a forest lake, and literally before her eyes, a girl, a participant in a corporate party of a commercial company, drowned. She drowned, but her body was not found ...And the next day, from the window of her own apartment, Nadezhda sees an unknown man strangling a woman in a neighboring house. Nadezhda, as a law-abiding person, calls the police... but the police find neither a corpse nor traces of a crime. Either Mrs. Lebedeva is going crazy - or something is happening something very, very curious. How can you resist a little investigation?..