The year is 2045, humanity is plagued by an enemy thought only to exist in old text and folk tales. Demons pierce the fabric of reality itself to invade earth and consume everything and everyone they can get their hands on. But somehow the demons brought magic with them to our world in the form of a video game like system. Now the defenders of humanity, commonly known as just ''''defenders'''' use this magic system to stand as humanity''''s shield against the dark tide from beyond our world.