The Moon Cell Automaton works in mysterious ways. Most times, it pits participants of its Holy Grail War against each other in order to determine who's worthy of its power. Other times, it uploads the consciousness of its most recent Grail War victor into an alternate dimension, with an irregular Magic System to boot, in order to grant him the life he never had.

Bell had the strangest dream. Problem is... he can't remember what it was about. But the Dream remembers him. The Dream will never forget what he had done. And within the Waking World, the Hunters he had wronged will be coming for him. Oedon does not forgive those who disrupted his slumber.