Great Rome, the Eternal City on seven hills, is on the verge of collapse. Indomitable barbarians are ready to drown the last island of ancient civilization in blood and plunge the world into darkness for centuries. An era is coming when only the strongest survive. And everyone in Constantinople understands this best. The Byzantine emperors are ready to sacrifice the Eternal City for the sake of saving Byzantium and the Christian faith. For it is not the barbarians who are the main enemies of the dilapidated empire, but the pagan priests with their idols, thirsty for Roman blood. On whose side will the truth be, who will win in a fierce battle: the ruler of the Goths Tudor and the leader of the ferocious Franks Ladion, who renounced the ancient gods and found new power in Christianity, or the dark prince Sar, a gloomy pagan, whom all the inhabitants of Oecumene fear, and who is popularly called a sorcerer?..