Description：During the Republic of China period, in Sihai County of a certain province, the local richest man Meng Guofu passed away. He left a will to divide his property equally between his two sons Shaoqiang and Shaoyun (played by Patrick Tam). Unexpectedly, Shaoqiang was murdered not long after, and his younger brother Shaoyun also pleaded guilty. At the same time, the smart and astute bounty detective Ka Naiji (played by Guo Tao) was using the money he got from solving the case to live a life of luxury in a restaurant, and was almost raped by the uninhibited Sister Furong (played by Guo Jin). At the critical moment, a mysterious figure rescued him and left a banknote and a letter, asking him to find out the hidden story behind Shaoqiang's murder. Attracted by money, Ka Naiji accepted the case and conducted an in-depth investigation with the help of the beautiful girl Zhou Linlin (played by Han Xue). It turned out that Shaoyun was indeed not the real murderer. At the same time, they were getting closer and closer to the truth and danger.