An investigation into several mysterious deaths leads Masha and Maksim to the White Crow Clinic for Nervous Diseases. A notorious girl, a psychotherapist Asya Maevskaya, works there. Masha is sure that a series of criminal events is directly related to her. Maksim, on the other hand, falls under the magnetic charm of Asya and considers her an innocent victim, who is being hunted by a certain criminal. To unravel the tangle of mysterious events, Masha decides to become a patient of the clinic. Feigning psychosis, she goes to Mayevskaya's department. It soon becomes clear that leaving the clinic is not as easy as getting into it.