On his way to prison, a man gets intercepted by a secretive government agency who task him to monitor a secret experiment in exchange for commuting his sentence.

A pilot finds crashes in remote mountains, and before his badly injured co-pilot dies he hands a camera with a haunting message in Korean “the judgement day is coming. As he seeks salvation he is haunted by a mysterious woman who has survived without human contact. Their cagey relationship is blurred as his reality becomes more disturbing, and he starts to question we're led into a world of the mountain's dark secret. With every twist and turn, we wonder whether or not he can break the shackles of his situation. The revelation of their true identities will give him one more chance to repent before he is doomed to a life of haunting.