『a最大(da)但(dan)人(ren)文藝(yi)術』介紹:David(古天樂 飾)、碧(bi)咸(xian)(蘇志威 飾)、碧(bi)咸(xian)的妹妹阿Ann(楊恭如 飾)、泉(quan)(李燦森 飾)從小一起(qi)(qi)長大(da),四人(ren)宛如兄弟姐(jie)妹,David與阿Ann更(geng)是(shi)青梅竹(zhu)馬(ma)。一日,阿Ann在夜總會做陪酒女郎時(shi)(shi)被(bei)黑道社(she)團洪樂社(she)的老大(da)勝(sheng)(sheng)(sheng)(方中信 飾)看(kan)上,隨(sui)后,Ann在酒吧(ba)為David慶祝生(sheng)日時(shi)(shi)遇到(dao)了(le)勝(sheng)(sheng)(sheng)。David與勝(sheng)(sheng)(sheng)爭風(feng)吃醋發生(sheng)了(le)爭執,打斗中勝(sheng)(sheng)(sheng)錯手(shou)(shou)誤傷(shang)了(le)泉(quan),使其(qi)成了(le)植物人(ren),悲憤(fen)不(bu)已(yi)的David發誓要幫泉(quan)報(bao)仇。碧(bi)咸(xian)好賭欠下高(gao)利(li)貸無法(fa)償還,被(bei)色魔(mo)雄(xiong)要挾用Ann來還債。勝(sheng)(sheng)(sheng)得知后派手(shou)(shou)下與David、碧(bi)咸(xian)一起(qi)(qi)去找色魔(mo)雄(xiong)談判,豈料談判破裂雙方大(da)打出(chu)手(shou)(shou),心狠手(shou)(shou)辣(la)的David奮(fen)勇殺(sha)出(chu)一條(tiao)血路,斬殺(sha)了(le)色魔(mo)雄(xiong)。一時(shi)(shi)間David聞名江湖(hu),隨(sui)后加(jia)入了(le)洪樂社(she)。David表現(xian)出(chu)色,很快(kuai)獲得了(le)勝(sheng)(sheng)(sheng)的賞(shang)識,他(ta)認為為泉(quan)報(bao)仇的時(shi)(shi)機(ji)已(yi)經到(dao)了(le)……