The World of Crystal—a grand fantasy attraction, a computer Disneyland—suddenly comes alive. It becomes real and tangible, taking with it into the computer’s Looking Glass a few thousand tourists. From the world created by the imagination of the classics of world fantasy and embodied by the genius of the great programmer Arthur Lee Nort—only one will be destined to return to the 21st century. A person whose path was mapped out long before birth. The one whom the local Oracle will call the Knight-with-the-Black-Sword. A master of martial arts who cut his way back and became the Guide between two worlds…