Park Gyu-Taek

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?

A spin-off of the digital drama ' re-feel ' , which aired in 2019 on Playlist , is the story of a man who wants to go back in time and correct his past mistakes.