The Undefeated delivers the one-two punch of Wayne and Hudson in a western of epic scale! In the tumultuous aftermath of the Civil War, Colonel John Henry Thomas (Wayne) of the Union Army leads his heroic men to the Rio Grande to sell a herd of horses. Along the way, he crosses paths with his former opponent, Confederate Colonel James Langdon (Hudson), who is leading his troops to Mexico to fight for hire. Old tensions flare, but when new trouble threatens them both, the old enemies realize their only chance for survival demands that they trust one another... and fight side-by-side!