When the Civil War breaks out Eric Warren, a young physician, enlists and is commissioned captain. In the field of action his clever maneuvers constantly harass the Confederates and Colonel Ashby, chafing under many defeats at the hands of the young officer, decides to capture him through a subterfuge. He calls upon his daughter, Rosalie, for assistance. The girl entices Warren to her home where he is set upon by several Confederate soldiers and made prisoner. It is then that the young captain displays the unusual nobility and generosity of character which compels Rosalie's admiration and wins her heart. Mrs. Ashby has been seriously ill for months and her condition becomes alarming. No doctor can be found in the neighborhood and the nearest town is many miles away. Rosalie is in terrible distress and the house in excitement. The news of the lady's suffering comes to Warren and he is told that no physician is available. Mrs. Ashby is lost unless the skilled hand of a doctor brings her relief. Forgetting the wrong which has been done him, Warren orders his saddle-bags brought in. Securing his case of medicines he is conducted to the bedside of Rosalie's mother. The crisis passes and Mrs. Ashby steadily gains strength. Rosalie is consumed with remorse when she realizes that the mother's life has been saved by the man whom she, Rosalie, has betrayed. The girl assists the officer to escape and he reaches his troops in time to turn the tide of battle.