The Roman Empire had spread order, knowledge, and civilization throughout the ancient world. When Rome fell, the light of reason flickered out across the Empire. The Dark Ages had begun; they would last a thousand years. Could a man from the 20th century prevent the fall of Rome? When lightning struck and he was hurled backward into the sixth century, the question became anything but academic to Martin Padway, but even forearmed with a knowledge of 20th century technology and of events to come, what could one man do? But Padway must try, lest darkness fall...