Alexander Trapeznikov is a famous Russian writer, author of action-packed novels: “Mechanical Paradise”, “Shadow of the Moon”, “Mousetrap”, etc., which received wide recognition from readers. Doctor Tim Teroyan accidentally meets a girl who has lost her memory. Trying to help her get rid of her illness, Tim finds himself drawn into a chain of incredible incidents. Only after entering into a mortal battle with a maniac nicknamed Quasimodo, having gone through love and death, fear and insight, the doctor and his three friends expose the seasoned criminal.