A human fighter squadron is scrambled, but their missiles act erratically due to countermeasures being broadcast from the ship.

Marine Lt. Tyler Laughlin leads a group of survivors through the chaos following the attack, trying to find a safe haven.

During their journey across the Los Angeles wasteland, Laughlin's group finds a surprisingly young World War II pilot named Captain Pete Rodgers.

Soon, the group encounters a sword-wielding special agent named Karla Smaith who takes them to a top-secret underground bunker.

She reveals that a secret branch of the government has held an alien captive for the past 60 years after his spaceship crashed.