After leaving Beijing, Zheng Chaoyang was transferred to Shanghai as the deputy director of the Municipal Public Security Bureau. At this time, the undercurrent in Shanghai was surging. The Kuomintang's reactionary spy organization Migratory Birds was planning a greater sabotage operation. The heroic people's police officers used their own lives to interpret the true meaning behind the glorious era. Due to the continuous investigation of the case, Zheng and Bai gathered here in Shanghai to continue writing their legend...
