Our contemporary falls into the Dark Ages. The ancient world has died, and the Middle Ages are just beginning. The Roman Empire is strong, and fights in the east with the Persians. Its population calls themselves Romans and does not suspect that they live in Byzantium. The empire cannot control its former lands, and therefore strong and predatory kingdoms of the Franks, Goths and Lombards arose there. From the deep forests, the Slavs come out more and more boldly and seize new lands in a stormy stream. HS gets into the worst possible situation. He is a slave, and according to local laws is a talking property. Will he be able to take advantage of the knowledge and skills that are given to him by life in the twenty-first century, or will he remain in captivity? There is a chance, and considerable. The harsh life at that time provides extraordinary opportunities...