Our contemporary finds himself in the Dark Ages. The ancient world is dead, and the Middle Ages are just beginning. The Roman Empire is strong and is at war 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. The Slavs emerge from the deep forests more and more boldly and seize new lands in a stormy stream. GG finds himself in the worst possible situation. He is a slave, and according to local laws he is a talking property. Will he be able to use the knowledge and skills that life in the twenty-first century has given him, or will he remain in captivity? There is a chance, and a considerable one. The harsh life at that time provides extraordinary opportunities...