1987年的某个夜晚，张皇失措的赛斯·汉普顿（Graham Skipper 饰）驱车来到好朋友马克·费舍（Josh Ethier 饰）的家，他语无伦次，声称不久前天上出现一道蓝光，将他们的另一个好朋友罗伯带走了。马克起初并不太相信赛斯的说词，谁知突然之间全城大停电，窗外亮起炫目的蓝光，并伴随着尖利刺耳的声响，混乱中马克仿佛被控制了一般，他推门走了出去，再也没有回来。在此之后，蓝光事件在派顿市引起不小的骚乱，而赛斯也成为罗伯和马克失踪案的嫌疑人受到指控。两年过后，马克的女友简·克莱文（Vanessa Leigh 饰）交到新男友，正准备展开新生活，而赛斯依然被当年的经历和噩梦所困扰。毫无征兆的一天，大停电再度发生，而消失已久的马克惊现丛林，但这绝不是赛斯熟悉的朋友……　　本片根据发生在缅因州派顿市的真实事件改编。

Eighty people from totally diverse backgrounds suddenly find themselves in an undisclosed location where they are expected to compete in a race with simple rules, "If you are lapped twice, you die. If you step off the path, you die. Race… or die."　　Many will start but only one may cross the finish line alive. Eighty individuals are chosen by an anonymous being, who instantly dis...