The series describes the great turning point between the Ancient World and the Roman Empire, as its personification, and the Middle Ages and the birth of the great Islam. Shows how, due to a chain of accidents and unnoticed events, the two largest powers of the period, Rome and Iran, were drawn into a final suicidal war, which essentially ended with the triumphant march of the true faith of the Prophet. The first book tells about the events that forced the Persian ruler Khosrow to seek help from his sworn enemy, the Emperor of Rome Mauritius, and the roles played by the future emperors Phocas and Heraclius, as well as what served as the prologue to the world war and the last war of the Ancient World .