Late night, Joon Bum, Tae Gyun and Duk Sun drink at the department building of the school. As Tae Gyun tells a bored story with full of cliché, saying that it is a scary story, Duk Sun interrupts and tells them she needs to go to the restroom. Duk Sun feels that something has gone wrong in the restroom and returns, but Tae Gyun and Joon Bum are no longer in the place they were. Duk Sun leaves the classroom and walks down the hallway, believing that they left as they are drunk. All of Sudden, the scary story that Tae Gyun has been telling Duk Sun comes to her mind, and she hears the footsteps of a stranger.