A clown with balloons shoots businessman Gorukhanov. And all this happens in front of the eyes of former military investigator Pavel Toropov, Gorukhanov’s companion. Pavel rushes in pursuit of the killer, but he safely disappears on the territory of a psychiatric hospital. With the greatest permission of the head physician Elvira, Pavel begins a “combing” of all the wards and offices of the hospital. But soon the former investigator “goes crazy.” It begins to seem to him that the murder is a figment of his sick imagination, and he himself has been a patient in a mental hospital for three years and all this time he has been partial to Elvira’s fatal charm. In this situation, Toropov can only act as befits a real psycho - run free in search of the truth...