Before this other world existed, the great god Arusu created the Great Eagle and the Great Sea. The Great Eagle turned its back on Arusu and in the battle the followed Arusu's fingers fell into the Great Sea and became four islands known as Four Gods. Their names are Tanoa, Shikisu, Naydo and Eija.
Civilizations come and go and sometimes they leave behind their technology for others to find.
In many cases, these are used as instruments of war and conquest. King Nabosu makes such a find and does, indeed, begin a conquest of all the known world. The Islands are also not spared Nabosu's hunger for conquest. On the island of Eija, he executes their king and queen in front of the population, and takes the Crowned Prince, Elluri, captive. In King Nabosu's employ is the theologian Ganak.