Jun-hee tries to warn the boys of the approaching danger. Meanwhile, a horrifying event takes place at school during the night.
Ahn Hyo-seop
Nam Si-heon / Koo Yeon-jun
Jeon Yeo-been
Kwon Min-ju / Han Jun-hee
Kang Hoon
Jung In-gyu
Jang Hye-jin
Bae Mi-yeong
Park Hyeok-kwon
Bae Chi-won
Yun Sang-jeong
Sung Hye-mi
Han Ji-won
Lee Su-jin
Song Ji-woo
Byeon Da-hyeon
Kim Yi-kyeong
Park Ji-hui
Baek Seong-cheol
Se-kwon
Kim Cheol-yun
Bum-sun
Lee Joo-sil
Gye-sun
Jang Yoon-jeong
Ji Yong-seon
Oh Yong
Dong-jun
Seo Ye-hwa
Seo Na-eun
Lee Min-goo
Kwon Do-hun
Min Jin-woong
Oh Chan-yeong / Oh Chan-hui
