Grace Leonard, a typical woman of the New York stage, beautiful but old in sin, seduces William Craig, who becomes a thief in order to shower luxuries upon her. He is sentenced to prison and emerges five years later as a sad-faced, gray-haired man, entirely cured of his mad passion for La Valencia. But she sees him and her old passion is stirred, meaning nothing to her that since his release from prison, he has fallen in love and married a good woman who knows nothing of his past. When William is not swayed by her fascinations, Grace threatens to expose his past life.

This picture is based on the same story that became D.W. Griffith's Orphans of the Storm in 1921. This version, made by the Fox Studios, stars famous "vamp" actress Theda Bara in the role that Lillian Gish later made famous

In 64 A.D., Marcus Superbus is Prefect of Rome. When the Emperor Nero decides to renew persecution of the Christians, Marcus opposes him, fearing for the safety of Mercia, the Christian woman whom he loves. Through the machinations of the Empress Poppaea and other women at court, Tigellinus, Nero's agent in the war against the Christians, convinces Nero to have Mercia arrested. Marcus appeals to the emperor for mercy, but is told that she can be saved only by renouncing Christianity. Waiting to enter the arena to be killed, Mercia steadfastly refuses to reject her religion, despite Marcus' pleas. Finally, Marcus is converted by her and they enter the arena to face death together.