Professional with a long experience, private detective Tatyana Ivanova confused and outraged not to joke . A modest kind teacher of an orphanage insists that she unintentionally took the life of a pupil . "Criminal" memorably says about his guilt and the details of what happened, the police with a sense of accomplishment of duty is preparing to refer the case to the court, but the famous detective will not conduct . Tatiana is alarmed by inconsistencies in the story of the accused, her excellent characteristics from the place of work, as well as the fact that all this happened at the moment when the child’s own father was preparing to take his son home.