It's cover-to-cover action as Earth's Global Defense Force fights valiantly against mysterious invaders from space. Little do they know this will be their last stand, or that their foes have consumed countless worlds before setting their sights on Earth. And when the battle takes a grim turn, all Retro Rocket wants is to go down fighting. But for the sake of his beautiful mechanic, Sparky Parks, Retro will discover the depth of human courage within his iron heart.