When Jim Brood's insane jealousy drives his wife Margaret to leave him, she is forced to leave her son Fred behind and go to live with her twin sister Theresa, an invalid. A wealthy baron wishes to adopt Theresa as his daughter, but Theresa dies and Margaret assumes her identity. Twenty years later, Margaret and Jim meet again. Not realizing that she is his first wife, Jim proposes to Margaret and she marries him to be near her son. Jim's jealousy reignites when he suspects Margaret of having an affair with Fred, and in a rage he shoots and wounds his son. When Margaret can no longer conceal her motherly concern for the wounded Fred, Jim discovers her true identity and the three are reconciled.