The prince is on a business trip

Special police detective Zhang Depei from the United States (played by Zhang Jianting) and Hong Kong local police officer Zheng Tianhui (played by Cheng Danshui) are two young men from wealthy families. They unanimously violated their parents' wishes to practice medicine and chose the police profession. While investigating a drug case, the two didn't know each other before and became good partners. The drug lords of the Golden Triangle developed an extremely pure drug - angel dust. They intended to use Hong Kong as a springboard to flow the drug and its formula into the United States. In order to prevent the spread of drugs, the United States and Hong Kong police jointly investigated the case. Intelligence revealed that wealthy businessman Chen Baichang and the Yunnan martial arts troupe that was about to perform in Hong Kong were under serious suspicion. The two good partners and their boss disguised themselves and sneaked into the venue...