1905, Central, Hong Kong. Revolutionary patriots were assassinated. Knowing that Sun Yat-sen (Zhang Hanyu) was about to arrive in Hong Kong, the Qing court sent General Yan Xiaoguo (Hu Jun) to kill him. He bribed gambler Shen Chongyang (Donnie Yen) to be a spy. It happened that the son of businessman Li Yutang (Wang Xueqi) Li Chongguang (Wang Bojie) was celebrating his entrance examination. Shen Chongyang saw that his ex-wife Yueru (Fan Bingbing) and young daughter had become other people's families, and left sadly. In order to protect his grandson, Chen Shaobai (Tony Leung), the president of China Daily, invited the owner of the opera troupe (Simon Yam) to take action, causing him to be brutally killed. His daughter Fang Hong (Li Yuchun) survived by chance. Chen Shaobai was captured and met Yan Xiaoguo, and the teacher and student broke up. The only son's parade friends were captured and other changes made Li Yutang join the revolution, which led to Inspector Smith (Eric Tsang) to close the newspaper office. During this time, Li Yutang helps the rickshaw driver Ah Si (Nicholas Tse) get engaged to his lover Ah Chun (Zhou Yun). Yue Ru meets Shen Chongyang at night and asks him to give up his evil ways. The beaten woman Fang Hong, the hawker Wang Fuming (Bateer), the beggar Liu Yubai (Leon Lai) and others also join the ranks of protecting Sun. A thrilling city-wide manhunt begins... This film has an investment of 150 million RMB. For the first time in history, it recasts the Hong Kong Central in 1905 in Shanghai at a 1:1 ratio.