Anesthesiologist Lu Yan met Deng Man, a friend who had been dead for many years, while anesthesiologist Lu Yan met Deng Man on the way to the night shift. After that, strange things happened around him one after another.In the process of finding out the truth, Lu Yan's ex-boyfriend who had been breaking up for many years, and the criminal policeman Jiang Chengyi was also involved.The truth that has been hidden for eight years has been revealed step by step.