The story begins when an ordinary office worker receives a mysterious invitation, creating an eerie atmosphere. Descriptions of an abandoned factory's sinister surroundings and strange phenomena gradually deepen the sense of dread, as the protagonist explores further, caught between fear and curiosity. Mysterious figures and ancient books add suspense along the way. Finally, the factory's bizarre accident and a mysterious old man's warning come to light, building the story layer by layer and laying the groundwork for what comes next.