The young Duchess D'Aiguillon is pursued by powerful enemies. She is forced to constantly hide and hides in a monastery. The reason for the persistent pursuit lies in the mystery that she represents. Because of this secret, her parents were killed. Because of this secret, the man she loved with all her soul died. Those initiated into this secret call the Duchess D'Aiguillon "The Emperor's Cup", for she is a direct descendant of Constantine the Great. She carries the blood of one of the greatest emperors of Rome. But not only. She carries within herself the secret of hidden treasures. The Duchess herself does not even suspect why she is so persistently pursued. She does not know and cannot know that she is protected by the descendants of Roman legionnaires, who have been guarding the “Emperor's Cup” for thirteen centuries. She doesn't know that the man she loves and believes to be dead... is the main guardian of the Emperor's Chalice.