1000 years have passed since the time of the Hero, Sir Levin. Wielding a mysterious energy, and advanced flying machines capable of utilizing it, Levin's forces quashed the warring Nations of Old, and brought peace to the new World-Nation. But it was not to last. As time passed, the Nations of Old resurfaced, bearing the energy that been used against them in ages past. They shattered the territory of the World-Nation into pieces, carving swathes of the land for themselves. However, they did not do this on their own. Fearing the coming of a second Hero, the Nations turned to mercenaries to act on their behalf and carry the pretense of global peace.
One such mercenary company was the Yellow Jackets. Acting as the regional army and air force for the great Kingdom of Liefton, the Yellow Jackets bore a code of honor atypical of the cutthroat bands typically employed by sovereign nations. Their commitment to virtue, and their growing influence in the region, lent themselves many enemies among rival nations and mercenaries alike.