The film is an ancient Roman story with exquisite layout, ambition, intrigue and political intrigue, starring Marlon Brando, James Mason and John Quigood. John Quigood plays Cassius, a senator with a desire for power, who is jealous of Caesar's fame and power, so he instigates others to assassinate the emperor. Marlon Brando's Mark Anthony, on the other hand, contrasts and balances with the role of Caesar, who is loyal and melancholy and is a good friend of Julius Caesar.