一批為美軍研制秘密武器的科學(xué)家神秘失蹤。Tyler領(lǐng)導(dǎo)的海軍陸戰(zhàn)隊(duì)員奉命前去查明真相，途中遭遇前所未見(jiàn)的強(qiáng)大敵人，一場(chǎng)大殺戮開(kāi)始了……
　　On a remote US Army facility a group of scientists conducting top secret weapon experiments vanish. An elite covert ops team commanded by Lt. Tyler (Kevin Sorbo) is tasked with recovering the missing personnel within 24 hours. The unit arrives only to find out there objective may not be what it seems, what was strictly a search and rescue mission has now become search and destroy. With time running out and the death count rising Tylers team must begin the hunt or fall prey to a predator unlike any they have ever encountered.