Female agents battle a gang of diamond thieves.

女警杨菁菁与卧底台警程傲群和中警华志勇合作缉捕中国地下兵工厂的香港党羽。
党羽首领阿Paul的妹妹Edna并不赞同兄长的行动，阿Paul的党羽阿Ben却对Edna有意，怎料Edna却一心一意恋上了恋勇。
由于傲群与志勇的背景不同，二人常常发生冲突，傲群性风流，却暗中恋上了菁菁。Paul向中国兵工厂的首领买了大批枪械，同时声东击西地派人在湾仔抢劫，以分散警方的注意力。
志勇与阿Ben争夺Edna的芳心，但Edna与Paul的关系暴露之后，Paul软禁了Edna，Edna企图报警及说服Paul报降，可惜Paul泥足深陷，最后死于傲群枪下，而傲群亦赢得了芳芳的芳心。

The Lung (Dragon) triad used to be one of Hong Kong's most powerful crime families, but its power has waned in recent years. The crime boss Lung Ying feels that their involvement in drug trafficking has resulted in costs that far outweigh the benefits, and he considers investing his wealth into relatively safe and legal industries. His second-in-command White Wolf and his frequent collaborator Tsui disagree with his anti-drug policies, and they plot to take over the triad. They assassinate Lung Ying, and they execute most members of the Lung family in a brutal massacre. Three members of the family survive the attack, and they start plotting their own brutal revenge. White Wolf is betrayed and assassinated by Tsui shortly after claiming power. Tsui is quite willing to kill or sacrifice all for his subordinates to secure power, but he might be weakening his own organization due to this mentality.

A crippled man with an invalid son, is so greedy that he forces his wife into prostitution. Then, he makes a deal with a crime boss to pull a big heist and invites his friends from China to help. Meanwhile, Miss Fan (Yukari Oshima), the social worker who attends to Eddy, takes a liking to police officer Peter Lee (Ben Lam). The heist goes awry, and the couple gets involved in bringing the bad guys to justice. A tale of betrayal and revenge, in which law prevails at a great personal cost of its agents.

五千年来，血魔反复再生作崇，附于有权势者身上，置人民于水深火热中，抗日年间，镇魔师梁初三与师兄合力将血魔镇服，可师兄身死，留下天赋异禀的孤雏林刚（林正英 饰）予初三抚养。一晃多年，十年动乱中，初三之子梁国栋（梁家辉 饰）检举父亲，投身“革命”。两年后，劳改归来的林刚与经历现实磨砺、丧失革命锐气的梁国栋重逢，二人在工地惊见血魔封印破坏，而当年的“臭老九”、今日的革委会领导雷复鸣被血魔附身，预备用手中权势掀起血海……另一方面，对血魔尚不知情的林刚、国栋二人渐渐明白了他们父辈当年的作为，同时对雷复鸣之女雷珊（王祖贤 饰）暗生情愫，但他们和血魔的血战，不可避免…