《法证先锋5粤语版》這部金庸電影拍攝於1980年由張徹導演倪匡與張徹攜手編劇錢小豪飾胡斐、郭追飾苗人鳳、鹿峰飾胡一刀、黃敏儀飾程靈素、楚湘雲飾南蘭故事描述十八年前胡斐之父一刀(鹿峰)與苗交換刀劍比武被己刀傷繼而身亡原來胡之刀早被田歸農(江生)塗上毒藥;苗妻南蘭被田勾引竟拋夫棄女後田更以毒粉弄瞎苗雙眼;斐見苗受此遭遇決定代其向藥王求救亦因此碰上一生中最愛的藥王傳人程靈素……影片讲述的是单小枫一直想将祖传火锅店发扬光大高中辍学后与父亲闹翻离家创业却惨遭失败随后几经波折再创业最终懂得父爱收获成功的故事 黄海(杜汶泽 饰)为人不学无术与日本新宿以各种手法求财一次因遭人陷害而欠下黑帮一笔巨债被逼于街头派纸巾还债竟巧合碰上患有轻度弱智的小学同学李子俊旅游时失散于是决定追着黄海不放黄海既要应付黑帮追债又被这个弱智同学死缠烂打令他苦不堪言正愤恨之际黄海却发现天真无邪的子俊竟然深得女性欢心\r\n\r\n 在经营酒吧得好友燕姐(杨贵媚 饰)拉拢下黄海想出利用子俊赚快钱的妙计:将丑小鸭化身天鹅令外表俊更更的子俊霎时变成风靡日本女性的陪酒型男黄海表面答应成事之后替子俊与哥哥团聚子俊毫无心机之下一口答应于是两兄弟便穿梭新宿的大街小巷之间展开一连串妙趣荒诞的经历见尽光怪陆离的人物\r\n\r\n 黄海一心只当子俊为摇钱树对他经常又打又骂但子俊的天真逐渐打动黄海两人每天在新宿互相扶持子俊更误打误撞地令黄海与前妻阿缘(叶璇 饰)但一连串的事件令两人的生活急剧变化逐渐迷失东京……Stoner, an Australian cop, has been investigating the spread of a mysterious addictive drug that acts like an aphrodisiac and a hallucenogen on anyone who takes it. When his own sister falls under its influence, he travels to Hong Kong to hunt down the man behind the drug trade, the evil billionaire Mr. Chin. At the same time, a Taiwanese officer has also been sent to stop Chin's drug empire. Together, She and Stoner battle the drug kingpin's dealers and henchmen....