1950年(👷)，大批武师(shī )进入(rù )香港开(🐌)设(🍩)拳馆，其(🕋)中叶问(唐文龙饰)竟无一(yī )败(🎹)绩名气大涨，引(🔬)起九龙城寨现寨主郑(zhèng )德(👋)隆(lóng )(林(lín )枫烨饰)的注意(yì )，郑德隆恐叶问对自己(🛍)产生(shēng )威(wēi )(🕯)胁(xié )，就将(✳)方家(jiā )灭门案栽赃在(zài )叶问身(🎿)上，想借(jiè )警察(chá )之(zhī )手除(chú )掉叶问(wèn )。突(🕕)现神(shén )秘(🐖)人(🤷)救出了(⏺)叶问。叶(🧚)问为自证清(📯)白(🚨)带着(zhe )徒弟(🖲)阿民(❔)阿(ā )(💱)强闯入九龙(lóng )城寨地界，谁(shuí )(📙)承(chéng )想城寨内早(🤠)以(yǐ )埋伏无数高手，叶问(wèn )能否顺利将郑德隆绳之于法，还(hái )自(💠)己一份清白！