When a school girl disappears, suicide is suspected, and one of her classmates is suspected of having goaded her into it.

A sickly girl Ju-ran transfers to a new sanitorium boarding school to regain health. But she discovers that students are disappearing and notices abnormal changes happening to her body. She…

Tree curer Cheong-a, who dreams of a happy marriage with her fiance, receives a request for tree treatment and visits a high school. Cheong-a meets a mysterious high school girl…