When an unusually large cluster of asteroids heads towards Earth, command sends a small fleet of spacecraft to shoot them down. It quickly becomes clear that not all is as it seems. An alien species with sinister intentions threatens to destroy our solar system.
It’s up to you to defend Earth from the dreaded World Destroyers. Huge alien space stations that harvest planets for their resources, leaving destruction in their wake. The aliens have superior weaponry, but perhaps mankind’s remarkable ingenuity can stop their plans.