In Shanghai in the 1920s, there were many concessions, and gangs, business circles, warlords, public prosecutors, and foreign forces were intertwined into a network. A bizarre murder case became the starting point for a secret rivalry between many forces. Xu Qingfeng led the criminal police team to investigate the case, Shen Wanxi continued to follow clues in the report, Zhao Mobai infiltrated the gang, Jiang Wenchu investigated as a military law officer, Qiao Yueping assisted each other with the law and the underground party network, and Feng Ziang treated key suspects in the hospital. As the case progresses, everyone discovers that it involves hatred between the country and the family, power struggles, secret files, and international espionage. The truth is far more complicated than it appears. Their respective growth and choices also affected the increasingly precarious Shanghai of the Republic of China. Multiple lines of stories overlap, and everyone works together to uncover the final mystery in the storm.
