Olga Brandt, a stenographer in the office of Stephen Leslie, an attorney, receives a pitifully small salary. In addition she is handicapped by having the sole care of an invalid sister. A capital operation is necessary to save the girl's life. Olga, being entirely without money, appeals to her employer. He offers to furnish the money on terms that the girl, through the urgency of her sister's case, is finally forced to accept. The operation is performed and the girl is removed to the seaside. Three months later Olga learns that her sister is dead. The futility of her sacrifice and her natural antipathy to the life she is forced to lead, lead her to flee from the home of her betrayer. One of the truly good men of this world, the Reverend John Armstrong, finds her wandering disconsolately through the streets, and he, claiming a former acquaintance with her, takes her to the home of his mother. As time goes on, the young people, mutually attracted long ago, become engaged. John receives a call to a country village, and on the eve of his departure for the scene of his future labors, he and Olga are married. A year later the little village is stirred by the exhibition of a moving picture entitled, "Shall We Forgive Her?" Mr. Jellice, one of the deacons of John's church, attempts to prevent the exhibition, and by doing so becomes embroiled in a law suit with the manager of the theater. John sends for legal assistance, the attorney selected being Stephen Leslie. Leslie arrives and in his visit to the parsonage meets the woman he betrayed. He upbraids her for leaving him and proposes that they resume their former relations. When Olga refuses he threatens to expose her. The timely arrival of John and the committee on their way to the theater saves Olga for the time being. The party enter the theater, the committee agreeing to abide by John's verdict on the picture. At the parsonage, Olga determines to give up her fight. She sees no escape for Leslie but in flight. She writes a hurried letter to John and bids good-bye to the home in which she had found true happiness and contentment. On her way to the depot she is attracted to the theater and finally makes up her mind to enter. The picture tells the story of a sacrifice such as her own. The despairing girl watches it with breathless interest. At the culmination of a tense, dramatic scene John, rising in his seat, praises the picture and upholds the moral which it teaches. A vision of the Saviour is shown and the sublime words, "Judge Not Lest You Be Judged," are flashed before the tear-dimmed eyes of the audience. Subsequently Olga and Leslie meet. His entire attitude is changed and the pictured story has worked his reformation. He implores Olga's forgiveness and begs her to return to her husband. John, arriving home, finds the letter of confession. He is stunned for the moment, but seeing his sorrowing wife on her knees, he remembers the sublime words of his Divine Master, "Judge Not Lest You Too Be Judged," and takes the erring but repentant woman to his arms.