Having to support her impoverished family, Grace Tyler poses for artist Michael Arnold, who seduces his new model and then leaves her. A few years later, after Grace has married the wealthy John Marshall, her sister Ruth, repeating Grace's mistake, becomes involved with Michael. Grace tries to break up the romance, until Michael threatens to expose their own affair to John, who has already become somewhat suspicious. Determined to learn the truth about his wife and Michael, John goes to the artist's studio while Grace and Ruth are also there, then, after a brief struggle, Michael dies from a knife wound. John is accused of the murder, but just before a jury convicts him, Ruth confesses to the crime and the court quickly acquits her because she had been defending her honor against Michael's advances.—Pamela Short

Grace Tyler, elder daughter of a family that is now in poor circumstances, poses for sculptor, Arnold. One day her sister, who has always accompanied her, is not present, and Arnold takes advantage of the occasion to force his attentions upon Grace. She tells no one at home, but goes no more to the studio, and later makes a good marriage. Several years pass before the sculptor again comes into her life. This time he wants Ruth to pose for him. The girl is enthusiastic, and as Grace cannot give the real reason for her opposition, Ruth accepts the invitation of the great artist to be his model for youth. As before, the two sisters always go to the studio together. After a while Marshall begins to suspect that his wife is fond of the artist, and to test her, suggests a little pleasure tour. Grace protests that she cannot go until Arnold has completed his work and in the jealous argument that follows Marshall is so outspoken that Grace finally tells him why she cannot leave Ruth. Meanwhile Ruth has gone alone to the studio. But in her Arnold has found a more desperate victim. She is willing to kill to protect herself. She is just fleeing from the studio and its dead when Marshall enters with drawn revolver. His decision has been quickly made after Grace's confession. He is arrested and it appears that he will be convicted on circumstantial evidence when Ruth can remain silent no longer. She takes the stand and tells her dramatic story. Marshall is acquitted.—Moving Picture World synopsis