Since the anesthesiologist Lu Yan “runs into” her dead college friend Deng Man during a night shift, strange things around her occur successively. As the investigation proceeds, the detective Jiang Chengyi, Lu Yan’s ex-boyfriend from many years ago, is embroiled in it, and the long-hidden truth of eight years is gradually revealed.
On her way to work the night shift, Lu Yan, an anesthesiologist, "runs into" her friend Deng Man, who has been "dead" for many years, and strange things have happened since then. Detective Jiang Cheng Yi, Lu Yan's ex-boyfriend whom she broke up with many years ago, also gets caught in the investigation, and the truth that has been hidden for eight years is slowly revealed.