Trapped in a strange rift in time, Green Lantern and Space Ghost are forced to battle a variety of foes—and each other! And even if they manage to survive, they will be thrown into a world with no concept of interstellar travel—or even what an alien is! Stripped of their weapons by a xenophobic culture, the duo will have to battle to regain them—but what happens when Space Ghost dons the Emerald Ring and Hal Jordan put on the Power Bands?