A small Colorado town becomes the battleground between two of the deadliest extra-terrestrial lifeforms - the Alien and the Predator. When a Predator scout ship crash-lands in the hills outside the town, Alien facehuggers are released in the crash. Also released is a hybrid Alien/Predator. A man and his son hunting in the forest near the crash site soon become the first victims of the facehuggers. A Predator receives data about the crash on his home...

Before Charles Xavier and Erik Lensherr took the names Professor X and Magneto, they were two young men discovering their superhuman powers for the first time, working together in a desperate attempt to stop the Hellfire Club and a global nuclear war.