- Story background: The story takes place in a small town full of mystery and terror. There are many strange public toilets in the town. These toilets seem to be the entrance to another world in the dark, hiding countless unknown secrets and dangers. A series of bizarre disappearances and deaths occurred many years ago, which were closely related to these bathrooms. Now, these horrific events seem to be starting again.
- Main plot: "I" planted the seeds of fear of public restrooms at night from my grandma's ghost stories. When I grew up, I heard about bizarre incidents in public restrooms in small towns, and the police intervened to investigate. During the investigation, new horror stories continue to emerge, such as someone disappearing after hearing strange conversations in the bathroom, and the aunt who was cleaning the house late at night encountering strange phenomena. "I" also had no choice but to enter a public restroom late at night and experienced a series of thrilling events. The police gradually discovered that these events were inextricably linked to old cases many years ago. As the truth was gradually revealed, more terrifying things followed.
