"At a prep school, a secret horror begins to unfold as the students begin to die."
Kim Ri-na
as Kang Eun-soo
Lee Eun-sung
as Kim Bo-ram
Yoo Ho-rin
as Seo Yoo-jin
Heo Jin-yong
as Lee Da-young
Son Ji-na
as housemother
Seo Hye-rin
as Seo Yoo-jin's mother
Shin Young-jin
as nurse
Kim Joo-ryoung
as teacher
Lim Jeong-woon
Choi Min-geum
as director
Choi Jeong-in
as Assistant Teacher 1
Kim Eun-kyung
Director
Ahn Byeong-ki
Producer
Lee Yo-han
Production Design
Il-han Yoo
Writer
