Promoted to the elite Praetorian Guard in the thick of battle, a young legionary is thrust into a seedy world of imperial politics and corruption. Tasked with uncovering a plot against the newly-crowned emperor Commodus, his mission takes him from the cold Danubian border all the way to the heart of Rome, the villa of the emperor's scheming sister, and the great Colosseum. What seems a straightforward, if terrifying, assignment soon descends into...