Ki-Chul drives his friends out to a resort situated by an abandoned coal mine. His father owns the resort. When they get there, they cross paths with a spooky man who warns them about the coal mine. Later, the friends find themselves in a desperate situation and enter the tunnels of the abandoned coal mine. Will they ever see the light of day again?
| Actor | Role |
|---|---|
 Jeong Yu-miEun-joo | Eun-joo |
 Song Jae-rimKi-cheol | Ki-cheol |
 Yeon Woo-jinDong-jun | Dong-jun |
 Son Byung-hoMr. Kim | Mr. Kim |
 Lee Si-wonYoo-kyung | Yoo-kyung |
 Bae Woo-heeHye-young | Hye-young |
 Jeon Cho-binClub extras | Club extras |
 Min Do-heeNot listed | Not listed |
 Yoo Jae-myungNot listed | Not listed |
 Jung JinNot listed | Not listed |
 Jung Si-yeonSe-hee | Se-hee |
 Jeon Woo-jaeRescue Leader | Rescue Leader |
| LLee Min-hyeCoal Mine Club Woman | Coal Mine Club Woman |