One after another, beautiful blonde girls die at the hands of a cruel and calculating maniac. They are all found with their throats cut. Lots of suspects, but no direct evidence. Senior Criminal Investigation Commissioner Ivan Logunov, who is dealing with this case, is increasingly reaching a dead end. The next trace he took turns out to be false again. And the maniac wanders around the city, peering into the faces of the women he meets... But there is a small clue in the investigation - when interviewing witnesses, nurse Zhenya, who lives in the entrance where the next victim was stabbed to death, reports that she caught a glimpse of the killer and gives a description of his appearance. From this day on, passion, far from the investigation, attracts Ivan Logunov more and more to this girl...