In a prep-class for year-end exams, a sadistic killer puts the students through mind-games in order to save each other.
| Writing | Yoon Hong-Seung | Writer |
| Writing | Kim Eun-Kyeong | Screenplay |
| Production | Hong Jung-pyo | Producer |
| Production | Im Seong-been | Producer |
| Crew | Heo Seong-ryong | Cinematography |
| Editing | Yu Yeong-ju | Editor |
| Sound | Kim Jun-seong | Original Music Composer |
| Production | Oh Sung-il | Line Producer |
| Sound | Lee Jong-ho | Sound Recordist |
| Directing | Chang | Director |