格雷汉姆·海斯(梅尔·吉布森 Mel Gibson 饰)是美国费城某小镇上一个普通的农场主,一天早上醒来,他和家人意外的发现自己的玉米田里出现了几个一串串紧紧连结在一起的庞大环状神秘图案。这可让格雷汉姆一家吃惊不小,因为玉米田里根本没有任何足迹,看上去像是外星球人的飞船降落的痕迹。很快全世界各地都传出了一夜之间出现神秘图案的消息,人们惊恐万分,惶惶不可终日。全国的媒体、记者和观众也都把焦点以风一般的速度转移到了这个美国南部的小镇,集中到了巴克斯郡的海斯一家。 这足有500英尺宽的神秘麦田圈,到底是有人恶意制造的恶作剧,还是乘坐UFO的外星人降临的痕迹,或者是某种灵异事件的结果?只有格雷汉姆发现了一些端倪,决定追查到底......Preacher Graham Hess, played by Mel Gibson, has lost his faith in God after his wife dies in a brutal car accident. He along with his son and daughter and his brother Merrill lives in a farmhouse. Crop circles begin to appear in their corn fields which Graham dismisses as mischief by miscreants. After hearing strange noises and watching news coverage on crop circles appearing all over the world, the family grows suspicious of alien activities. Now they must stick together and believe, as a family to survive the ordeal and find a way to escape.