 At the Last Outpost an officer in the Union Army has just met the beautiful redhead who was once engaged to his brother, an officer in the Confederate Army. She is at present unhappily married to the owner of the trading post but will soon be a widow. Add to this Apache Indians, an intercepted gold shipment and a special expediter coming from Washington. And those Conferederate guerillas who have been so troublesome on the Western front of the Civil War are led by the long lost brother and former fiance and future president of the USA.