In the distant future, a potent and rare energy resource known as rubium controls the interstellar economy. Several galactic corporations compete for control over this resource in hopes of securing riches for themselves. When their military forces arrive to harvest rubium found on a foreign moon, they are greeted by the many indigenous life forms. They quickly conscript the alien creatures and begin marching against their competitors. Far out on the galactic frontier, away from oversight or public scrutiny, these four corporations now do fierce battle for control of the moon’s rubium.