Marcus Aurelius Antonius, the philosopher-emperor of Rome, summons his empire's governors and princes to his German war headquarters for a Pax Romanus. He confides to his daughter, Lucilla, that his adopted son, Livius, will succeed him instead of his more unstable heir, Commodus. Overhearing this, Cleander, a blind prophet loyal to Commodus, presents Marcus with a poisoned apple. After the funeral, Livius, who does not share Lucilla's ambition for...