Some time after the Mousekewitz's have settled in America, they find that they are still having problems with the threat of cats. That makes them eager to try another home out in the west, where they are promised that mice and cats live in peace. Unfortunately, the one making this claim is an oily con artist named Cat R. Waul who is intent on his own sinister plan. Unaware of this, the Mousekewitz's begin their journey west, while their true cat friend, Tiger, follows intent on following his girlfriend gone in the same direction.

1990年的9月24日，两位驾着F16战机的美国空军在伊拉克上空禁区做着例行飞行检查。出乎意料的，在北大西洋公约空域中出现了一架伊拉克喷射客机，李班宁机长（罗伯派屈克饰演）察觉这件意外后，准备赶这架偏离航道的飞机回正轨。约翰达克机长（鲁格豪尔饰演）则飞近这架客机想一探究竟，并向客机发出请求离去讯号。突然间三架伊拉克MIG战机冲出来，对这两保F16开火并发动飞弹攻击。达克与班宁立刻反击，并且和敌机做激烈的空战。但达克却不幸被飞弹射中，飞机连人垂直掉落至伊拉克土地上，成为一片火海。而李班宁当天晚上在漆黑的巴格达夜空中却目击到一件无法说出口的恐怖事实。