In the year 1200 everything was going wrong, all at once, around the world. Once-mighty empires were on the verge of ruin, crops were failing, previously-legendary monsters were suddenly commonplace. In the West, some of the mighty remembered the letter they had received, thirty-five years ago, from "Prester John," a mighty emperor in the far East. In the letter Prester John had claimed to rule 72 kingdoms, many magical, and have over a million men...