The Stand-in

Wang Ah Si is a poor rickshaw driver working in Hong Kong. Desperate to make more money so he can afford eye treatment for his girlfriend Ah Chun, he takes on a job from Ou Shuyun, the rebellious daughter of the Guangdong inspector-general and a supporter of revolutionary Chen Shao Bai. As there was a mishap during his mission, Ah Si is forced to accept yet another job - to his surprise, it's to pretend to be Li Chong Guang, the son of businessman Li Yu Tang.
In order to prevent inspector Tie Shan from discovering the truth, Li Yu Tang arranges for Ah Si to become Chong Guang’s replacement. All seems to be well until Shu Yun’s father discovers that his daughter is in a relationship with Chen Shao Bai and tries to cover it up by forcing Chong Guang and Shu Yun to get married.