David(古天乐 饰(🏽))、碧咸(苏志(zhì )威 饰)、碧咸的妹妹(mèi )阿Ann((🐉)杨恭如(🍖) 饰)、泉(李灿森 饰)从小(xiǎo )一起(qǐ )长大,四人宛如(⚫)兄弟姐妹,David与阿Ann更是青梅竹(zhú )马。一日,阿Ann在(zài )夜(yè )(🍮)总会(huì )(🙁)做陪酒(🖍)女郎时被黑道社团(🤷)洪(hóng )(🔊)乐(lè )社的老大(dà )胜(shèng )(方中信 饰)看(⏯)上,随(🔢)后,Ann在酒吧为(🥔)David庆祝生(🏂)日时遇到(dào )了胜。David与胜(shèng )争风(fēng )吃醋发(fā )生了争执(zhí ),打斗中(zhōng )(💠)胜错手误(🤳)伤了(🥕)泉,使其(qí )成了植物人,悲愤(fèn )不已(❕)的David发(👊)誓(shì )要(💍)帮泉报仇。碧咸(🏻)好(hǎo )赌欠下高利贷无(🃏)法偿还,被色魔(🐩)雄要挟用(yòng )Ann来还(hái )债。胜得知(zhī )后派手下与David、碧(bì )咸一起(🏃)去找(zhǎo )色魔雄(xióng )谈判(pàn ),岂(👄)料谈(🆙)判破(pò )裂双方大打(dǎ )出手,心狠手辣(👛)的David奋勇杀(🐂)出一条(tiáo )血(xuè )(👩)路,斩杀(❓)了(📬)色魔雄。一(😉)时(shí )(🚤)间(jiān )David闻(wén )名江湖(🔮),随后(🐈)加(🔬)入(rù )(🍯)了洪乐(💕)社。David表(biǎo )现出色,很(💨)快获(huò )得了(🛌)胜的赏(shǎng )识,他认(rèn )(♊)为(wéi )为泉报仇的时机已经(jīng )到了……