It's the year 1990 and the beautiful city of Hong Kong is under siege as the crime world goes 'turbo'. Triad leaders vie for power on the streets, drug trafficking is getting out of hand and the thin blue line that separates justice from anarchy is being erased. Within a few months time, the Triads will control every major crime activity in the Pacific Rim and no law enforcement agency in the world will be powerful enough to stop them. But all of that changes when the 'Angel Terminators' arrive, a new police force led by Detectives Ida and Hon, two close friends who are like sisters and watch each other's back in the line of duty. Ida and Hon are the best there is and they take on some of the toughest cases that ordinary law enforcement won't go near and take on criminal figures that no cop would dare go after. Excelling at gun fighting and hand to hand combat techniques, Ida and Hon are given authorization by their superiors to use any means necessary to stop the crime wave and that ... 曾健乃香港贩毒头子，因被小红，及Ida所率领的警队追捕而仓忙潜逃至泰国，留下情妇Carry在香港。数年后曾健以泰国华侨沙华的身份返港，而Carry已下嫁警司金志远，曾知悉后非常愤怒，故设赌局欺骗志远，令志远欠下巨债，被迫替曾卖命，与此同时Ida四出调查曾健，令曾的交易受阻，曾设计杀死志远及嫁祸Ida。
