One will die for every incorrect answer.
In a prep-class for year-end exams, a sadistic killer puts the students through mind-games in order to save each other.
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6.2/10Rating on TMDBFrom The Movie Database199 votes
Lee Beom-sooHwang Chang-wook
Yoon Jung-heeChoi So-yeong
Nam Gyu-riKang Yi-na
Kim BumKang Hyeon
Son Yeo-eunYoon Myung-hyo
Lee EolSecurity guardKim So-heeJi-won's mother
Kong Jeong-hwanLee Chi-yeong
Ham Eun-jungKim Ji-won
Yang Ji-wonMin Hye-yeong
Lee Chae-wonYeom Ji-hyang
Kwon Hyun-sangCha Jae-wook
Son Ho-junJo BeomChoe In-SukMyung-hyo's mother
Choi Bae-youngPark Hyun-gyeong
