Ham Seolwon, who completed his residency and opened an ophthalmology clinic in his hometown of Seansi, decides to spend a holiday at a mountain villa with his old friends while heās back home. However, due to unforeseen circumstances, his friends plan to arrive at the villa the next day, leaving Seolwon to spend the night there alone. What wakes Seolwon from his sleep is the sound of an unfamiliar intruder. Frightened, he tries to contact his friends and the police, butā¦
āIām really sorry. Cars canāt get through right now.ā
āCaller! Due to the heavy snowfall, access to the mountain area is currently impossible!ā
ā¦he ends up completely isolated. Alone with a mysterious intruderāAlpha Gu Haeju.