Sharp screams and the rattle of the projector dominate the meetings of Movieten, a high school horror cinema club. The club members experience a roller coaster of emotions as they make horror movies. Their passion for the club leads to arguments while planning and analyzing the cruelest murder sequences in the short Harpy, their current project. The screenwriter of Movieten is Soo Yun. Even though she has a crush on Hyun Woo, it's difficult to approach him since he is dating Yae Rim. But when Hyun woo also begins to show an interest in Soo Yun, Yae Rim begins to openly torment Soo Yun. The tension between the three gradually exposes other conflicts within the club, leading to an atmosphere of nervousness and instability. Just a couple of days before the crank-in, Kyung Jae hurts his hand and the club is forced to hire a non-member Tae Dong as a substitute. Nonetheless, everyone is excited to be filming Harpy at last, and it is overlooked. Finally, on the day when they leave for the filming location, which happens to be Soo Yun's cabin, all conflicts are buried and everyone at the club is happy. But as filming begins, Soo Yun's boldly imaginative screenplay with its brutal murder scenes begins to transform itself into a reality that is much more frightening than the movie itself.