The year is 2117... Human colonies are spread throughout the Sol System. Once controlled by the United Terran Republic, the colonists have been angling for independence for quite some time. The Galilean Federation, once Earth's colonies on the moons of Jupiter, had already achieved independence without a shot fired some 25 years ago. Now, the Martian colonies want independence as well. The newly formed Martian Colonial Union, representing the separatist movement on Mars, has determined it will stop at nothing to achieve its sovereignty from Earth, even if it means war. The Terran Space Force once only had an exploratory and protective mission, but time and tension have forced it to evolve into a full-fledged military service. Now, its warships would have to face-off with those of Mars in a deadly game of cat and mouse. As one side presses for its freedom, the other pushes to avoid war.