As Los Angeles prepares for Halloween, mask-wearing armed robbers critically wound detective James Knight’s partner in a shootout following a heist.

Warring Alien and Predator races descend on a rural Colorado town, where unsuspecting residents must band together for any chance of survival.

The Autobots learn of a Cybertronian spacecraft hidden on the moon, and race against the Decepticons to reach it and to learn its secrets.