...(After Exodus), the cyborg race Xyl discovered humanity, and proceeded to systematically begin the process of what they had done to every other species in their quadrant - exterminate them to the last microbe.
Your mission as the human supreme commander in this exciting solitaire game is fourfold: First, rebuild and retool the peaceful human economy and set it on a war footing. Second, develop and build mighty starships of war to bring the fight to the Xyl. Third, develop new technologies that could turn the titide of the war.. or turn out to be worthless dead-ends. And finally, destroy the 4 Flagships of the 4 Grand Fleets, or if you are bold (or desperate) enough, send an fleet to destroy the AI Core.