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一批為美軍研制秘密武器的科學家神秘失蹤。Tyler領導的海軍陸戰隊員奉命前去查明真相，途中遭遇前所未見的強大敵人，一場大殺戮開始了…… 　　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.