In a prep-class for year-end exams, a sadistic killer puts the students through mind-games in order to save each other.
이범수
as Hwang Chang-wook
윤정희
as Choi So-yeong
남규리
as Kang Yi-na
김범
as Kang Hyeon
손여은
as Yoon Myung-hyo
Lee Eol
as Security guard
Kim So-hee
as Ji-won's mother
공정환
as Lee Chi-yeong
함은정
as Kim Ji-won
Yang Ji-won
as Min Hye-yeong
Lee Chae-won
as Yeom Ji-hyang
