一颗卫星在南极洲厚厚的冰层下发现一处热源反应，这很快引起一家科技公司的注意，他们认为这一定是远古遗迹。很快一支由考古、科学等专家组成的探险队前往，他们带去了先进仪器。探险队人员到达南极洲后发现一个不知个人开凿通往冰层的通道。在深入冰层下2000多米的地方他们发现了一个类似金字塔的地方，这里的景象让人叹为观止却也让人惊骇不已。他们不知他们的闯入无意间触动了机关，一个被囚禁于此长达百年的异形女皇被放了出来，它开始疯狂产卵。就在此时，一艘宇宙飞船降落投放出三个铁血战士，他们径直闯进金字塔内对人类发动了进攻。原来外星生物铁血战士一直在此囚禁另一种外星生物异形。探险队员随着进一步深入无意间获得铁血战士存放此处的肩炮，失去肩炮铁血战士的战斗力大大减弱。为了对付越来越多的异形，铁血战士与探险队达成合作，探险队将肩炮还给铁血战士。铁血战士对异形大战正式开始

A satellite spotting a heat source reaction under thick ice in Antarctica has quickly caught the attention of a tech company that believes it must be It is an ancient relic. Soon an expedition team composed of experts in archaeology and science went there, and they brought advanced instruments. After the expedition team arrived in Antarctica, they discovered that an unknown person had dug a passage into the ice. At a depth of more than 2,000 meters under the ice, they discovered a place similar to a pyramid. The sight here is breathtaking but also horrifying. They didn't know that their intrusion accidentally touched the mechanism, and an alien queen who had been imprisoned here for a hundred years was released, and it began to lay eggs crazily. At this moment, a spaceship landed and released three Predator, they broke into the pyramid and launched an attack on humans. It turns out that the alien creature Predator has been imprisoning another alien creature here. As the expedition team went deeper, they inadvertently obtained the shoulder cannons stored here by the Predator, and the combat effectiveness of the Predator was greatly weakened without the shoulder cannon. In order to deal with more and more aliens, the Predator reached a cooperation with the expedition team, and the expedition returned the shoulder cannon to the Predator. The Predator vs. Alien war officially begins