With war with the Pirate Clans looming, an uprising begins among the Neosapiens, an artificial humanoid race coexisting with Terrans. In the back-story, the Neosapiens were used primarily as slaves during the colonization of Mars and Venus and therefore have been engineered to be physically stronger and better adapted to hostile environments than humans. Their mistreatment by Terrans led to the First Neosapien Revolt fifty years before the series' begin, which was mercilessly crushed but had brought some positive changes into their lives. Still not content with his fate, the Neosapien Governor of Mars, Phaeton, sets a new insurrection, codenamed "Operation Destiny", in motion as soon as the Exofleet leaves to chase after the Pirate Clans. The absence of the Exofleet is also a part of Phaeton's plan as it enables the Neosapiens' capture of the Homeworlds without much effort.