Beyond the Ward Walls, the Realms of Chaos test their strength against humanity's guardians, the Chaos Riders. Chaos is a strange place; it can change a man, they say, and time and reality are not always as they seem.   Locke, a young apprentice swordsman, seeks his own destiny—as well as his father, long lost to Chaos—beyond the Walls as a new Chaos Rider. But a Darkness grows beyond the Walls, and if the City of the Sorcerers is to survive, Locke must find in himself the very hero that he has been seeking.