Gu Ci, a frustrated mystery novelist, wrote all his ideas about crime aesthetics into a never-published novel - "The Perfect Murder". However, a shocking serial murder case was staged in Lanhai City. The method of death of the deceased and the layout of the scene were exactly the same as the plot in his novel. Just when he was listed as the number one suspect by the police, the real murderer sent him the first letter - it contained blood-stained manuscript paper and annotations written in red pen: "The logic here is not rigorous enough, I will help you revise it. I look forward to your next chapter, reader." From then on, Gu Ci was forced to start a life-or-death battle with a ghostly "reader". What he writes is no longer a novel, but the epitaph of the next victim; what he receives is no longer a rejection letter, but revision opinions from hell. In order to end this killing game, he must know more about crime than the murderer, and even... Be crazier than him.
