Interpol Captain Zheng Mu received a fax from the Hong Kong police to assist in the investigation. Lan Qi defrauded 85 million Hong Kong dollars to abscond. At the same time, he received a threatening letter in black and white. The recipient was Jiang Yuping, and her husband Feng Lu, who had not been seen in ten years, was kidnapped. Zheng judged that Lan Hefeng was a person through reasoning. Hong Kong sent a police officer Lin Yong to assist in tracing Feng Lu. In the process of investigating clues, Zheng learned that Feng's cousin Qi Tianle had been sentenced to be released but there was no trace, and Feng Biao's lover Xu Ziying and He Li were involved. At the same time, Hong Kong reporter Ding Wenting, business consultant Zhong Ze of the defrauded company, and Feng's “second marriage” Tian Hongni also came to the city to compete. During Feng's escape, he was tracked down by Zheng Mu, Hong Kong police officer Lin Yong, Xu Ziying’s lover "First Lady" Jiang Yuping, "Second Lady" Tian Hongni, murderer Zhong Ze, Hong Kong reporter Ding Wenting, Lawyer He Li, and cousin Qi Tianle