IT MUST NOT AWAKE. "When the traffic lights burn blue, when the Blue Sword awakes, then take care, then take care, for your doom is near " Computers possessed by demons called the Masters have ruled the Arth for over a thousand years. The Perfect Men they have bred by vile arts now fill the Arth, and the Old Race of ordinary men born of women, are extinct. Except for one young man, preserved by the mysterious agency of other powers hidden in the Mountains, who is destined to awake the Blue Sword in which lies the doom of the Masters. They are pulling out all the stops in their efforts to prevent him reaching the Hidden Forges where the Sword slumbers.