一对年轻的情侣在深夜的狂欢派对结束后开车回家，没想到车子却在漫天风雪的旷野中意外抛锚，迷失方向并且孤立无援的他们，该如何在救援人员赶到前求得一线生机？而此时除了酷寒天候的严峻考验，紧跟在他们身后的神秘足迹，又将给他们带来什么样的致命威胁？零下低温的恐惧袭击，爱情能否战胜生存的本能？ 　　本片改编自震惊全美,曾登上全美各大媒体头版骇人听闻的真实案例，即将带给你梦靥般的惊魂体验!

　　柯恩被美国徵召到远洋海岛进行一个扫雷行动，出到岛上，柯恩立刻察觉事有蹊跷。柯恩的手下在扫雷时意外炸破一栋建筑物，外星人向他们攻击，众人逃出，在洞外又发现一个老人，老人率众人到他居住的洞穴。在洞内，柯恩得知在1995年时，飞碟坠毁，美军派员到岛上进行研究，外星人反击，研究组全死于非命，仅留下老人，柯恩设计将外星人陷住，并安排逃离岛外的木筏…

　　Scientists at a secret underground complex have found a way to travel to another dimension. Three dimension-travellers are the first to go through the gate - but are soon attacked by something that interrupts the communication with Earth. This horrible something uses the gate to travel back to the underground complex. Most of the staff are evacuated, except four heavily-armed militaries and Dr. Casserly and Dr. Summerfield who just can't stand each other...