Meteors shoot into the ocean a couple of miles off the coast of Los Angeles. Minutes later, beachgoers witness a strange alien like army oozing out of the water. These aliens are nasty, they're fast, and they kill on site. Within seconds they're shredding the suntanning populace to pieces and moving into the city of Santa Monica. Marine Sgt. Nantz leads his new platoon against a surprise attack on Los Angeles, attempting to rescue civilians in Santa Monica and destroy the hub of the enemy's mysterious power grid, while similar epic battles are waged across the world in other cities.