You were a terminally ill patient, suffering from an incurable illness. You spent most of your life in the hospital, the place where you may or may not die. Xiao was the grim reaper assigned to your death, and decided to survey you a month before your death. Unexpectedly, you were the first human who has ever been able to see him.

Through the days, the both of you start to grow close, and even form a small bond. Will death take you away from him? Or will he find a way to save you?