故事大綱：美國三藩市，運動場內一片掌聲，是為李小龍展示的中國武術而鼓掌，觀眾席上的葉問也為徒弟的成就而喜悅。葉問此行出國，除了探望李小龍，真正目的是為兒子尋找學校給他留學，讓下一代擴闊視野。可是，短暫的外遊日子中，葉問已發現外地的生活並非如他想像，不公義事情原來同樣存在。人在異鄉的葉問很想聽到兒子的聲音，可是每次的長途電話都被兒子拒絕接聽，父子關係惡劣，種族文化差異，葉問感到前所未有的孤寂與迷茫，更無意間被捲進一宗中西武術界的衝突事件，多名師父被一名軍官巴頓打至重傷！面對多重思緒衝擊，葉問重新審視自己，找回學武的初心，為正義挺身而戰！一場生死決鬥，也是葉問的自我完成，終為武術界打出尊嚴。但，這趟旅程的背後，原來葉問真正面對的是生老病死的課題：人終一死，武學精神如何長存不息？
Ip Man’s life remains unchanged after his wife’s death, but he and his son are slowing apart. To seek a better future for this son, Ip Man decides to travel to the U.S. only to find the stable, peaceful life abroad is only skin deep. Underneath lies a deep-rooted racial discrimination that is far worse than he has expected. Ip Man re-examines his position and ponders on the reason he took up marital arts in the beginning.
