本片讲述卡特里娜飓风期间，在美国新奥尔良州的第九区低地发生的一宗抢劫案。
锦恒（吴镇宇 饰）和Henry（陈锦鸿 饰）是一对好同事兼好友，同在一家杂志社担任负责人。虽然两人是好友，但两人的性格却相差甚远。锦恒为人老实，甚至有些古板，而Henry则大方开朗、生性风流。两人都已经成了家，锦恒和妻子Ivy（李婉华 饰）婚后一直过着平淡的生活，虽然感情稳定，却毫无生气；而Henry的妻子Linda（彭杏英 饰）和他性格相当，两人虽然经常打打闹闹，但比起锦恒他们却也热闹许多。
George Washington McLintock, "GW" to friends and foes alike, is a cattle baron and the richest man in the territory. He anxiously awaits the return of his daughter Becky who has been away at school for the last two years. He's also surprised to see that his wife Katherine has also returned. She had left him some years before without really explaining what he done but she does m...
在这个经典的21世纪西方电影里，两国交界边境的治安警察与恶毒的墨西哥贩毒集团斗智斗勇。这部以人物为主导的电影以前所未有的方式引发了人们对目无法纪，法律秩序的崩溃以及是否应该以暴制暴这些问题的深度思考。