The story is set in Peiping in the 1930s. It revolves around detective Shen Muyu who, in the process of solving a bizarre murder case, is involved in a spy war storm, high-level officialdom games, and family secrets. The main plot gradually unfolds around an unsolved file involving political figures from all parties, and is interspersed with Lu Wanru's media investigation, Han Shenzhi's undercurrent of the art group, Wu Boling's secret operations with underground party members, and Liu Siqing's rescue story at the bottom of society. Multiple clues are intertwined with each other, and among the crises and mysteries, the true texture of the society of the Republic of China and the changes in human nature are outlined. Each volume contains independent suspense cases and decryptions, while echoing each other. The ultimate mystery points to a big conspiracy related to the fate of the country.
