一批为美军研制秘密武器的科学家神秘失踪。Tyler领导的海军陆战队员奉命前去查明真相，途中遭遇前所未见的强大敌人，一场大杀戮开始了…… 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.
特效场面虽然不算惊艳，但也达到了及格线以上的水平。
作为科幻片 ，很好满足受众期待，既有该类影片标配刺激元素，又创新融入特色内容，值得同类借鉴。
整部影片堪称一场视听与心灵双重享受，从开场到落幕，沉浸其中，跟随角色笑泪与共，离场仍久久回味。
配角们也毫不逊色，各有鲜明性格与独特背景故事，虽戏份有限，却凭寥寥数笔勾勒出鲜活形象，为影片添色不少。
剧情节奏把控堪称精妙，紧张刺激与温情舒缓交替出现，就像乐章里的激昂与悠扬，巧妙调节观影情绪，全程无冷场。