Humanity has been brought to the brink of extinction. Each night, the world is overrun by demons--bloodthirsty creatures of nightmare that have been hunting and killing humanity for over 300 years. A scant few hamlets and half-starved city-states are all that remain of a once proud civilization, and it is only by hiding behind wards, ancient symbols with the power to repel the demons, that they survive. A handful of Messengers brave the night to keep the lines of communication open between the increasingly isolated populace.