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.

Since she was little, Ha-ram has relied on her sunglasses to keep her sanity, because without them, she begins to see terrible things.