A young girl is kept ignorant of her mother by her aunt. After her aunt dies, the girl is used by crooks and arrested. In prison she meets a kindly woman, who is married to a judge. The woman, unbeknownst to the girl, is her mother, and adopts her. The companion of the deceased aunt, in the midst of a ball, denounces the mother and reveals her secret to the judge and guests. The judge will not forgive his wife, so the mother and daughter leave and work among the slums to benefit humanity. Eventually, the judge relents, and seeks his wife for forgiveness, but he is too late.