美国政府研制出一种高效的神经毒气，这种毒气被释放到马里兰州一个小城市的居民身上。在最高机密演习期间，受感染的市民开始把每个居民都变成一种活僵尸，直到剩下的6个完全陌生的城镇居民被困在电影院电影院。

The United States Government has developed a highly effective nerve gas that is unleashed upon the residents of a small Maryland City. During the top secret exercise the infected citizens begin to convert each resident into a sort of living zombie, until the remaining town residents, 6 total strangers, are trapped inside a movie theater cineplex.