In his attempt to be the most powerful man in the world, Justin Taylor, leader of a sinister Ninja army, has become the largest narcotics smuggler in the orient. The U.S. Drug Enforcement Agency and the Hong Kong Police have joined forces with the CIA and a brilliant policewoman, the awesome Amazonia, to bring down Taylor by any means, at any cost. The CIA operative chosen for the task ultimately realizes that the man he must kill was his closest friend in the war. Torn between justice and loyalty he's got to make the most crucial decision of his life.

越南海关军官阮文泰常滥用职权压榨平民。曹芹南、通伯、家洛、阿斗、水仙和百合在越南时屡被阮欺压，立意偷渡来港，却于公海遭阮派人洗劫，女的更被强奸，曹妻因而折磨至死。曹等人几经辛苦，漂流抵港，在港经营餐厅生意。国际刑警查知阮以渡假为名，来港与黑道人物陆逢春勾结，把庞大军火运往荷兰，遂派女刑警歌狄亚联合国驻港国际刑警雅伦搜集阮之罪证。百合与水仙在夜总会中得罪陆之手下，曹等人出面摆平，与陆结怨。阮来港后得悉曹等人在此，恐他们坏其勾当，买凶杀他们。曹等人脱险后与歌狄亚联络，合力对抗阮，歌以美色诱阮，探得军火收藏地后通知曹把军火劫走。曹以军火逼阮交易，暗中在废屋四周布下死亡陷阱，连场大战瞬即展开......