The city of Nsk has never seen such crimes before. A young man was brutally murdered in a rented apartment, and apparently it was done by women! His mother, who raised her only son alone, is inconsolable. The only thing she wants now is justice. And who will help achieve it if not the brilliant private detective Miroslav Volgin? But the further the case progresses, the clearer it becomes - there are many more victims in this story...