Theria, is the main dimensional realm, where mortals live.
Elysia, the divine realm, home to the gods and their worshippers.
Evocuria, the realm of the dead, the place where non-believers are sent, also the the realm where a soul is tried to go their respective gods.
Xera'os, the manifestation of chaos necessary for the world, has gone berserk, shattering the balance between order and chaos, plunging the once peaceful realm into chaos, causing monsters and entities of chaos to invade the realm.
The gods have become too busy in fighting the otherworldly chaotic entities, mortals have started declining, wars have become common place, the peace once brought about by the balance is nothing but a far off fantasy, chaos and war is rampant.
Take a look into the realm of Theria.