On her final combat mission across the rugged mountains of Afghanistan, Royal Air Force fighter pilot Lt. Kate Sinclair’s jet is shot down over one of the most dangerous rebel strongholds. When insurgents come after her at the crash site, she finds refuge in a long since abandoned underground bunker. After tracking Sinclair into the depths of the bunker, the insurgents accidentally awaken a man-made deadly biological weapon known as the Ravagers - half human, half alien and hungry for human flesh. Terrified, she watches the creatures rip apart the men pursuing her. Sinclair barely escapes and is picked up by a US army patrol sent to find her. Major Roy Finch, commander of the local US army outpost ‘Fort Apache’, and his ragtag squad of brave soldiers have a difficult time believing mutant monsters have been kept hidden in these mountains. Unaware that she has been tracked to their base, dozens of the vicious creatures are already swarming towards them.

西罗（艾德·斯克林 Ed Skrein 饰）、科内尔（瑞恩·科万腾 Ryan Kwanten 饰）、艾斯波琼（汤姆·霍珀 Tom Hopper 饰）等人是一群身强体壮勇敢无畏的维京勇士，他们搭乘着前往英格兰的航船，即将抵达林地斯法恩岛，在那里等待着他们的，是价值连城的黄金和财富。然而，意外发生了，风暴的袭来让船舶毁于一旦，好不容易捡回一条命的一行人顺流而下登上了苏格兰海岸，然而，这里是阿尔巴王国的领土，阿尔巴国王（Danny Keogh 饰）对维京人恨之入骨，他接二连三派出了残暴冷酷的杀手想要了结西罗等人的性命，而这群维京壮士们，他们必须赶在自己人头落地之前抵达离这里最近的维京人定居点。

英国皇家空军战斗机飞行员凯特·辛克莱中尉在执行最后一次穿越阿富汗崎岖山区的战斗任务时，她的飞机在叛军最危险的据点之一上空被击落。当叛乱分子在坠机现场追赶她时，她在一个早已废弃的地下掩体中找到了避难所。在追踪辛克莱进入地堡深处后，叛乱分子意外地唤醒了一种被称为掠夺者的人造致命生物武器——半人半外星人，渴望人肉。她惊恐地看着这些生物撕碎追赶她的男人。辛克莱勉强逃脱，被派来寻找她的美军巡逻队抓住。陆军少校罗伊·芬奇是当地美军前哨基地“阿帕奇堡”的指挥官，他和他那群衣衫褴褛的勇敢士兵很难相信变种怪物一直隐藏在这些山里。她没有意识到自己已经被追踪到基地，几十个邪恶的生物已经向他们涌来。

On her final combat mission across the rugged mountains of Afghanistan, Royal Air Force fighter pilot Lt. Kate Sinclair’s jet is shot down over one of the most dangerous rebel strongholds. When insurgents come after her at the crash site, she finds refuge in a long since abandoned underground bunker. After tracking Sinclair into the depths of the bunker, the insurgents accidentally awaken a man-made deadly biological weapon known as the Ravagers - half human, half alien and hungry for human flesh. Terrified, she watches the creatures rip apart the men pursuing her. Sinclair barely escapes and is picked up by a US army patrol sent to find her. Major Roy Finch, commander of the local US army outpost ‘Fort Apache’, and his ragtag squad of brave soldiers have a difficult time believing mutant monsters have been kept hidden in these mountains. Unaware that she has been tracked to their base, dozens of the vicious creatures are already swarming towards them.