While on a project outing in an abandoned military zone, five college students accidentally release a long kept secret weapon with a nightmarish purpose.

For Millennia the Aliien force has watched and waited, a brooding menace that has now at last decided to take over the Earth. Communications systems worldwide are sent into chaos by a strange atmospheric interference and this has turned into a global phenomenon. A massive spaceship headed towards Earth and smaller spaceships began to cover entire cities around the world. Suddenly, the wonder turns into horror as the spaceships destroy the cities with energy weapons. When the world counterattacks, the alien ships are invincible to military weapons. The survivors have to use their wits to kill the aliens, or die.