在小镇上，一个年轻人游手好闲无所事事，于是他决定去纽约碰碰运气。影片讲述了1925年发生在美国西部牛仔的故事，风格搞笑幽默。A young man who doesn't find a job in his small hometown, tries his luck in New York, but is overwelmed by the life of the city, so decides to try his luck somewhere else after a only a few minutes in New York. He falls off a train near a ranch, where he tries his luck as a cowbowy, being in his own way very sucessful. But he shows what he can do when the farm has to bring a 100 head of cattle to the slaughterhouses of Los Angeles to avoid going bankrupt, against the will of his neighbour who wants a better price. After a shoot-out with the neighbour's men he's the only person on a Los Angeles bound train with 1000 cows....
法国青年瑞斯（乔纳森•莱斯•梅耶斯 Jonathan Rhys Meyers 饰）在大使馆中工作，同时他还是美国情报部门的见习人员，精明强干的瑞斯对“换车牌”，加窃听器之类的任务自然是驾轻就熟，但是他很快迎来了真正的挑战——配合探员瓦克斯（约翰•特拉沃塔 John Travolta 饰）在巴黎的行动。瓦克斯作风强硬，举止粗暴。恍如漫画中走出的美国英雄，甫一下飞机，便咬住了毒品的线索一路大开杀戒，先后与华人、巴基斯坦和黑人帮派连番激战……瑞斯对神奇的瓦克斯目瞪口呆之余，也渐渐跟上了他的节奏。任务接近尾声之时
