Bo Zi (played by Kwok Fucheng) is a young and influential policeman who is a happy partner with the cowardly Duo Chun Yu (played by Wu Mengda) and has repeatedly made contributions. Someone threatened to kidnap Li Zexi (played by Wen Zhaolun), the son of Hong Kong tycoon Mr. Li. Since Li Zexi had just returned to Hong Kong, no one knew him. Mr. Li wanted the police officer to pretend to be his son. Bo Zi was entrusted with an important task. It happened that his girlfriend Axin (played by Qiu Shuzhen) was working at Li's company. Axin did not know her boyfriend's undercover identity, but only felt that his boss was very similar to her boyfriend. At the same time, Li Ze washed his childhood sweetheart J...