When a private satellite encounters an unidentified source of heat in Antarctica and it is found to be a pyramid buried deep underground , a search team comprising of top-of-the-line archaeologists and engineers is sent to Antarctica to find out more . Once there , the team comes across signs which indicate that the place is inhabited by an unknown alien species . It is not long before the aliens begin to hunt the team members . At the same time , a trio of coming-of-age Predators have arrived to collect the skulls of the aliens as trophies , and the humans are caught between a deadly battle between the two warring species .
An expedition of archaeologists on Earth discover an Aztec temple hidden under the Antarctic circle, housing a host of Alien creatures. A group of coming-of-age Predators have also come to the temple, as it has long been a training ground for their race. From there on, it's Aliens vs. Predators, with the humans caught in the middle.
Set in the early 21st century on Earth, Charles Weyland, an industrialist billionaire, leads an archaeological expedition in Antartica. Using thermal imaging satellites, Weyland believes to have discovered the ruins of an ancient pyramid temple that predates the Egyptian and Aztec pyramids buried under the ice. Once inside, the team finds the remains of humans with holes in the rib cage and the remains of facehuggers, meaning that the possibility of the temple being uninhabited is very unlikely. To make matters worse, a group of teenage Predators are coming to the temple to perform a coming-of-age ritual that involves fighting to the death with the aliens. Soon, it becomes clear that only one species is getting out alive.
Since the beginning of time, the Predators, the feared, hulking alien game hunters, have come to Earth for one simple reason: to engage in a coming of age ritual. To become "men," the teenage Predators have to hunt down a hive of Alien warriors and successfully defeat them and claim the skull as its trophy. However, during one hunting session, the easily aggravated Aliens fight back, leading to the destruction of the two species and the Aztec people who worshiped the Predators as Gods. Nearly two thousand years later, billionaire industrialist Charles Bishop Weyland rediscovers the pyramid, buried thousands of feet under the ice of Antarctica, with his satellites. Knowing that he has discovered something important, Weyland fixes up a team, led by Lex Woods, and heads down to the Antarctic to find the pyramid. But once they get there, the enslaved Queen Alien awakens from her sleep, which results in the production of new eggs and Facehuggers. And to make matters worse, the new hunting clan of teenage Predators, led by the brash and violent Celtic, have arrived, ready to hunt down both the Aliens and the humans within...
Thousands of years ago, huntsmen (the predators) found planet earth. While there, they trained humans to build and were reverenced as Gods. Every century, these "Gods" would go back to Earth, and when they did, they expected a sacrifice. Humans were used as livestock to breed the vital prey (the aliens). The predators would now combat the prey to establish themselves creditable or to "carry the mark" of becoming adults. If the huntsmen (the predators) find themselves losing the battle, they would then self destruct in order to make sure that nothing survives. Billionaire Weyland thinks that he has exposed the remains of an early pyramid temple, that is a cross between the Egyptian and Aztec pyramids. It was hidden under the ice of Bouvetøya Island in the Antarctic Ocean. Now, what industrialist Charles Weyland and his comprised team of engineers and scientists didn't know was that the predators have set a trap for them. They have lured them to this remote location using a heat beam picked up by Weyland's satellite. This was done to make sure that the aliens had hosts to breed in. As the humans battle both predators and aliens, predators and aliens also have a battle of the species which will leave only one race standing.