During the creation, 'the one who knows' found a fatal flaw known as 'evil' within him, so he tore apart his chest and separated himself from this entity and battled it. He under the guidance of 'one who guides' a figure living at the end of time banished this evil entity into a prison that existed outside of reality separated by the veil. Ten thousand years ago, during the first age, the sentient races of the Urali encountered a huge calamity when 'the one who destroys' seeped into reality, causing a great cataclysm that destroyed civilizations. In the war against evil, a messianic figure known as the 'radiant prince' led humanity against the dark forces. He rode on a white horse carrying the fiery sword and saved humanity. Ten thousand years later, the veil is weakening, as the "one who destroys" began to recruit more and more followers, empires waged wars against each other. The fate of mankind rests on a man and woman who must unite the world against the invading forces of evil.