As a film in the "Ip Man" series, the movie "Ip Man Side Story" continues the story of "Ip Man 3". It tells the story of Zhang Tianzhi, also a descendant of Wing Chun, who, after losing to Ip Man in a competition, decided to give up kung fu and stay away from the disputes in the martial arts world. However, faced with successive provocations and malicious infringements on the justice of his family and country, he decided to pick up Wing Chun again to punish drug dealers and defend the moral dignity of the nation with "martial arts".