The Roman Empire, 30 AD. Titus Vespasian of the Flavian family, who served four years in garrisons on the outskirts of the empire, is embroiled in a tangle of metropolitan political intrigues. To fulfill the secret mission of the grandmother of young Guy Caligula, Vespasian and his brother Sabine have to go through a lot of adventures. They fight with the Gets on the snow-covered passes of Thrace, visit the sanctuary of the oracle, get into a fight with pirates off the coast of Greece. However, the main dangers lie in wait for the brothers in the Eternal City of Rome, where everything is sold and bought, and human life is the cheapest.