This drama sees the human world from the perspective of death, with an increasingly suspenseful and misty plot. It tells the story of Black (Song Seung-heon), a Grim Reaper who guards death and possesses the body of a policeman, and Kang Ha-ram (Go Ara) who can see the shadows of death....

Ha Rib is a popular songwriter and he has written many hit songs. He possesses wealth, prestige and he also holds a secret. His secret is that he is able to write hit songs, because he sold his soul to the devil. Ha Rib's contract with the devil is soon to be completed, but he learns that his success and fame is the result of taking Lee Kyung’s talent and life. Ha Rib struggles to restore his life, Lee Kyung and those around him. In the process, Ha Rib recognizes the essence of life....