Something about the deserted all-girls institution irks its neighbor—the all-boys boarding school. Something that has to do with a piece of the establishment's cloaked history. Woohyun Nam attends the all-boys private school—a rusty three-story tall building imprisoned by England's woods. And on the day prior to a four-week-long vacation, Woohyun ventures out into the abandoned building after being driven by utter curiosity, and after words spread of an unknown girl being spotted in the local area. At the forsaken school, Woohyun gets his hands on a leather, hardback memoir cover in dead blood spots that read: Mijoo.