多年來，偵探Jae-hwan一直癡迷于捕捉Jin-hyuk，負責他的搭檔和姐夫的死亡的連環殺手，即使復仇的道路意味著跳過一些規則。但是，當拖延已久的相遇終于到來時，事情并沒有像預期的那樣進行——經過一場追逐和一場混亂的事故，在失蹤了一個月之后，Jae-hwan被銬在醫院的病床上醒來，卻發現他被困在Jin-hyuk的身體里，而反過來，兇手正在取代他和他的家人在一起。但這只是一個起點，一個曲折、極端的敘事，充滿了令人驚訝的轉折，并染上了鮮血和霓虹燈的紅色。在他的殘酷處女作中，金在勛(Kim Jae-hoon)借用了身體轉換的比喻，以塑造類型電影愛好者的盛宴。

　　The nightmare was about a demonic possession. A long time ago, there was an evil in a small town and it was jealous of the girl and would never let her go, since the devil loved the girl. One night, the evil raped the girl and she became pregnant. After months the girl could not hide her baby, her father figured her secret out and clapped the girl in irons and locked her room door. But the evil put the gun to her father' temple and saved the girl. The father had a stroke and had been sleeping on the bed for three months and died. Time went on and the girl brought a child into the world. Naturally, people who were living in the village heard the story and they did not want to see neither the girl nor the baby since when the baby was born, plants dried in the field, fishes lost in the lake and people had prayed to the god for rain, but nothing changed in the village. People got so angry, dug a hole in front of the fountain, put her into the hole and threw stones at her face. The girl died soon after. The evil went off the deep end, took a revenge of the village and killed everyone except two sisters because the evil wanted them to take care of its baby...

　　勞拉，來自馬德里的西班牙律師，為尋找她失蹤的妹妹薩拉，深入剛果叢林的鈳鉭鐵礦產區，營救妹妹