A well-known detective-psychic receives a diary of a girl who studied at a boarding school. She died in strange circumstances and school was closed in a hurry. The place quickly became notorious. Ominous sounds are often heard from there and carcasses of animals found in the vicinity. People talk about spirits and poltergeists and bypass the building. A letter was attached to the thick diary envelope asking him to save the soul of the granddaughter, possessed by a demon. The hero would have treated this letter as delirium of a crazy old woman, if not for a diary with evidence that the girl and her friends performed a mystical ritual. Intrigued by this story, the hero undertakes to investigate the mysterious events of the