The origin galaxy of the race known as Humans. Once isolated in a tiny corner on a planet known as Earth this boundlessly curious species spread throughout their galaxy. In 2179, after a brutal conflict humanity split. Those of Earth again isolated themselves from the stars and billion of humans left the Milky Way for a new galaxy. However billions remained in the outer worlds cut off from their home world.
Today thousands of worlds in the Milky Way are home to billions of humans. Earth, now know as Gaia, and the surrounding solar system are still isolated and protected. The entirety of the rest of the galaxy is ruled over by a series of organizations known as the Pirate Clans. While there are pockets of peace and civilization, must of the worlds are in the service of the Clans and subject to constant conflict and political instability.