439 BC: The Roman Empire is on the brink of collapse. The army of the Vandals sweeps through Roman colonies in Spain and North Africa, conquering Carthage and threatening Roman dominance in the Mediterranean. But an even greater threat lurks in the east, a barbarian force born in the rugged Asian steppes, fierce warriors intent on annihilating anything in their path - it is the army of Attila the Hun.
For a small group of Roman soldiers and a mysterious British monk, the only defense is to rise above the corruption and weakness of the Roman emperors and return to the glorious days of the Roman army, centuries before, to draw strength from history. They devise a plan of unimaginable courage, which will take them into the heart of darkness, to the fortress of the most fearsome warrior-king ever born. In the final showdown that will follow, the most critical battle ever fought by the Romans, victory will come to the side that raises the most powerful war symbol ever constructed - Attila's sacred sword.