During the process of maintaining public order, Police Captain Chang Yong discovers a gang of criminals who have robbed a large sum of cash and hidden it within the city. As the investigation into this robbery deepens, many new leads gradually emerge. In the end, with the unwavering efforts of Captain Chang Yong and the entire criminal investigation team, who fear no hardships or dangers, the criminal plot is finally thwarted, and the wrongdoers are brought to justice.