When detectives Jiang Guangming (played by Ma Yili) and Shi Luo (played by Gao Zhiting) were investigating a case, they accidentally discovered that the crime scene described in the novel by writer Gu Jiming (played by Tong Dawei) strangely overlapped with the crime scene they were investigating., fiction and reality intersect, is everything 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... A case within a case, a mystery within a mystery, and the murderer hidden behind the scenes.Who is it?

The play is adapted from the novel of the same name by Matsumoto Seicho.