Set in the near future, a team of archaeologists lead by Charles Wiedland (Lance Henriksen, returning for more ALIEN action after appearances in the second and third films) ventures towards an inexplicable "hot zone" detected in Antarctica. Joined by Alexa Woods (Sanaa Lathan) and the requisite amount of human fodder for the otherworldly creatures to feast on, Wiedland and his cohorts discover a sizeable underground pyramid. Chaos ensues as they awake the Queen alien from her blissful slumber, causing face-hugging and chest-bursting scenes aplenty. But the ailing crew has a further quandary to grapple with in the shape of some fearsome Predators, who are using the aliens as bait for their offspring to brawl with in an ancient initiation ritual. With the human team trapped in the labyrinth-like pyramid, the battle evolves into a nail-biting three-way tussle between the archaeologists and their extraterrestrial adversaries