The central continent, from where the light is believed to have originated from, went silent, while at the same time demons began to spread throughout the world like a plague. Amongst the survivors of the catastrophe, that fateful day became known as the "Day of Light."
Sometime after the events of the Day of Light, a young man by the name of Weiss, who had lost all memory of himself, encounters an enigmatic woman named Eva, who introduces herself as an Agent of the Divine. It is from her that Weiss learns that he has committed the grievous sin of deicide, and that in order for him to atone for his crime he is to become the "Vessel" in which the power of the divinity he had slaughtered will be stored. For it will be that power that will be used to resurrect the one whose life he stole.
For those who betray the divine will pay for their sins in the space which separates salvation and damnation, as will their progeny...