For millennia, the Sapphire Empire has ruled over the various planetoids upon which dwell the Chromians, a race of small, colorful aliens. Powerful, eternal, the Blue Emperors rule over all the Chromians, with each of them in their right place: the Blues on top, holding positions of prestige and influence; the Reds in the large factories, producing the goods that fueled the Empire’s rise; and the Greens in the fields and wetlands, growing the Empire’s food.

Other less prominent colors, such as the Purples and Cyans, also enjoyed the Imperial peace - but all was not well in the Chromian realm. The Blue rulers became decadent, oppressing the other colors to maintain its dominance. This led to the Crimson Rebellion of the Reds, while the Greens descended into violent anarchy before regrouping into warring clans.