在华盛顿特区以西20哩的小镇上,农夫汤姆(查理•辛 Charlie Sheen 饰)的田中出现了怪圈,当地记者辛迪(安娜•法瑞丝 Anna Faris 饰)对这条新闻颇为留意,不顾上层反对着力调查,汤姆的弟弟乔治(西蒙•雷克斯 Simon Rex 饰)痴迷嘻哈音乐无心农业令汤姆颇为头疼。在怪圈出现后,小镇上的孩子们出现了诸多怪异表现。辛迪的朋友布兰达在看了一部录像带后离奇死亡,而辛迪本人也接到了宣布七天后她将死亡的神秘电话,无助的辛迪向乔治求助,得以拜见了黑人先知,才发现一系列怪事的根源与一座灯塔有关。同时,辛迪通过电视向身处危机之中的人们发出外星人可能来袭的警告,连美国总统(莱斯利•尼尔森 Leslie Nielsen 饰)也开始正视此事……A mysterious killer video tape is circulating around. One look at this tape and you have seven days left to live. News Reporter Cindy Campbell (Faris) witnesses this video tape and tries to work out a way to prevent her death. But this is not the only mystery to appear. Crop circles have been appearing in the local farm of Tom (Sheen) and George (Rex). With help from Aunt Shaneequa (Latifah), Cindy suspects that the aliens may be linked with the killer tape and must now work out both mysteries before it's the end of the world.