The Blood moon, is approching. A natural phenomena, in which the moon will glow bright red and bestow upon the monsters and demons that plague Elvenkind, and Humankind, with incredible strength and prowess. Walled cities, are the main defense of the forces of purity. And when one such city, Galbrand, is faced with a string terrible crises, it's up to an orphan, and an emotionally untable monster hunter, to save it.