Home from the American Civil War, where he fought for the Union army, John Willoughby now lives in the western town of Kittreck Wells with wife Nora and their 7-year-old son, Petey. An appeal for help from Marshal Russell comes when a band of former Confederate soldiers are seen pulling a robbery in a neighboring town. John, who hates all rebels, agrees to go, against his wife's wishes that all his fighting must end.