Jung Si-yeon

A small-time thug who collects debts for the local triad is torn between his criminal aspirations and his devotion to family.

A forensic pathologist is about to retire in order to spend some time with his daughter. However, he is forced to continue working when his daughter is kidnapped.

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?