17-year-old Yeon-gyu was born in this place and has never been anywhere else. While enduring the repeated violence inflicted by his stepfather, he saves up money in the lone hope of moving to the Netherlands with his mother. Chi-geon, born and raised in this town, is now a mid-level boss in a criminal organization. Having learned early in life that this world is hell, he gets by in his own way.

Eun-hee is hired as a vice principal at her old high school, where strange things take place in the closed down washroom. High school student Ha-young and So-yeon, who used the washroom as their hideout hear humming in the empty washroom, and believe that a ghost exists inside. Ha-young discovers a flowerpot on the stairs and suspect that Eun-hee is somehow linked to the mystery. Suffering from hallucination upon her inauguration, Eun-hee finds a ghastly figured girl in the washroom mirror and begins to believe that the girl was the one who brought her back to this school…