根据美国FBI的线报，近期将有大批军火流入香港。为了打掉这个由台湾黑帮头目李思泽（陈勋奇 饰）率领的规模庞大的犯罪团伙，香港警方决定集合海陆空三方面的力量组建一支身怀绝技的特种部队予以对抗，而吴大君上校（徐少强 饰）正担任该部队的队长。吴上校先后从三军挑选了周俊杰（刘德华 饰）、刘家伦（梁朝伟 饰）等功夫高强、个性鲜明的战士加入特种部队。这群恃才傲物的活宝来到部队，必然惹出不少麻烦，不过在吴上校的严格训练下也确实掌握不少格斗、求生的本领。
经过一段时间艰苦磨练，这群铁骨铮铮的汉子终于出师，然而前方还有更加残酷的任务等着他们……

Epic adventure set during a tumultuous time in China, when left without a leader, the cavalry is attacked by the powerful allies and pirate bands. A martial arts master, Wong Fei-Hong and Aunt Yee return to do battle against these evil forces.

In this Hong Kong variation of Robin Hood, corrupt officials of a Chinese village are robbed by a masked bandit known as "Iron Monkey", named after a benevolent deity. When all else fails, the Governor forces a traveling physician into finding the bandit.

When Master Tak, an old martial arts master, disappears, his best student, Jet, steps in to find him. However, when he learns that Tak's life is in danger, he decides to protect him at all costs.

1990 film by Ching Siu-tung

1990 film by King Hu, Ching Siu-tung, Ann Hui, Tsui Hark, Andrew Kam