Petersburg. Mysterious and gloomy, at times ruthless and arrogant, looking at the bustle of the world of the living with the cold stiffness of a dead man. This city shocks, bewitches and constantly devours human lives, turning people into ghosts, and making ghosts look like people. Behind its front façade, in dilapidated communal apartments, among the labyrinths of gray streets, in the echoing depths of gloomy entrances and wells of courtyards, there are crazy geniuses, adepts. ancient cults, perverts, leaders of secret organizations... and a poisonous something incomprehensible to common sense. And every new moon, brutal murders of young women take place in this city. But the ominous night ripper is only a link in the crimson-red chain of demonic passions, madness and loneliness, stretching like a noose through space and time from the darkness of medieval legends...