"Zhang Ning (played by Xia Yu) is a Hong Kong gangster boxer. In order to prove himself to his girlfriend Sun Jing (played by Yang Caini), Zhang Ning was hired to kill people in Hong Kong. After the incident, he and his girlfriend embarked on the road to escape. A year later, the former "four famous arrests" of the Gansu police - "Leopard" Xiang Xiang (played by Duan Yihong), "Tibetan Mastiff" He Jianzhong (played by Ni Dahong), "Sheepherd" Yang Xiaoming (played by Wu Jing) and "Yak" Han Chaodong (played by Zhang Li (actor) gathered in the desert to hunt down Zhang Ning..."