Zhui long fan wai pian: Zhi shi yi tan zhang

In 1960s Hong Kong, rookie cop Xu Le cracks a robbery but gets demoted instead, as this offends a corrupt inspector. Xu meets a rich girl Bai who falls instantly in love with him one day. Will he break up with his childhood girlfriend for Bai to climb the social ladder, and how does Xu eventually become one of Hong Kong's legendary detectives?