The world of Atreia was create by the god Aion. Aion also create Drakan, the protector of the world of Atreia, and the human that occupied it. Inside the world of Atreia, though no star could reach, the light of Aion kept the world bright.
Drakan, the first inhabitant,to rule and watch over the later created creature. But some of the most ambitious Drakan found a way to tap the power of dimension beyonds Aion's reach, ascended to become the first Dragon Lords-the first Balaur. Tyranny to the other creatures and races-the war breaks and the great pillar known as The Tower of Eternity that attached the Upper World and Lower World that held it together shattered, thus known as The Great Cataclysm.
The shattered world of Atreia is inhabited by two races-Elyos and Asmodians-and their common enemy,the Balaur. The Asmodian inhabitat the upper half of the world far from reaching light, and the Elyos inhabit the lower half bless by the light and prosper.