The TV series tells the story of detectives Jiang Guangming and Shi Luo, who accidentally discovered that the crime scene described in the novel by Gu Jiming coincided with the crime scene they were investigating. Fiction and reality were intertwined. Everything was really just a coincidence.?The emergence of the novel also provided a new direction for the two men's investigation, but at the same time it also led them into a deeper mystery... The case within the case, the mystery within the mystery, who is the murderer hidden behind the scenes?who?