The great three-sided war continues, Rome against Persia against the tribes of the desert now commanded by Mohammed of Mekkah. The tide is turning against the Eastern Empire--the Emperor Heraclius lies bedridden in Constantinople and his brother Theodore has lost a great battle to the tribes. In the West, Rome lies devastated by the long-pent eruption of Vesuvius. And in the hidden valley of Damawand, the Persion sorcerer Dahak plots his revenge...