After the crew of the Enterprise find an unstoppable force of terror from within their own organization, Captain Kirk leads a manhunt to a war-zone world to capture a one-man weapon of mass destruction.

A squad of U.S. Marines becomes the last line of defense against a global invasion.

A traveling art saleswoman tries to shake off a flaky motel manager who falls for her and won't leave her alone.

When Mari Gilbert's daughter disappears, police inaction drives her own investigation into the gated Long Island community where Shannan was last seen. Her search brings attention to over a dozen murdered sex workers.

Los Angeles and other cities around the world are being bombarded by meteors that seem to be slowing down once they hit the earth's atmosphere. The earth is suddenly being invaded by space aliens that have landed off the shore of LA, and who begin killing everybody along the beach. The military is ordered into action. Marine Staff Sergeant Nantz (Aaron Eckhart), who was about to retire, is reassigned to a new platoon. The platoon, flown by chopper to the forward operating base at Santa Monica Airport, is being led by a new 2nd Lt. Martinez (Ramon Rodriguez). They are sent on a mission to rescue some civilians who are trapped at the police station within alien territory. They only have 3 hours to complete their mission and get out before the Air Force bombs that zone.