Duan Hongzhang's daughter, Yu Mei, is an agent of Scout Shanghai Station. She is actually a member of the the Communist Party of China (CPC) underground party. In the action of arresting traitors, she fell in love with Ding, the former stationmaster of Shanghai Station, and later carried out tasks with her many times.
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Synopsis: In the early years of the Republic of China, Gu Hansen, a wealthy businessman, adopted two adopted sons, Liao Sicheng and Fang Tianyi. They grew up together with their own daughter, Gu Ting, as close as brothers. When he grew up, Liao Sicheng graduated from Whampoa Military Academy with excellent results and studied in Japan.
On the surface, he is a Kuomintang officer, but his actual identity is the undercover of the Chinese Communist Party lurking in the national army. While studying in Japan, he fell in love with Bai Weiling Oshima, the daughter of a senior Japanese official. When the September 18th Incident broke out, they were not allowed to go to never say goodbye. After returning home, he joined the army, followed by Gu Ting and Fang Tianyi.
Outstanding performance was quickly taken seriously by Dai Li, who sent him to Shanghai to trap Ding, the stationmaster of Shanghai Station. With the cooperation of Yu Mei and Yimei Gu Ting of Shanghai Railway Station, Fang Tianyi successfully completed the task. Fang Tianyi's outstanding performance greatly touched Dai Li, making him kill Japanese traitors under the code name of "Black Fox", which greatly dealt a blow to Japanese morale.