In a small town in the Old West, Will Kane, the town marshal, is newly married and about to leave office for a peaceful life with his young bride, Amy. Their plans are abruptly interrupted when Kane learns that Frank Miller, a murderous outlaw he once sent to prison, has been pardoned and is arriving on the noon train to seek revenge. Despite Kane's efforts to start a new life, the looming threat forces him to confront his sense of duty and personal code of honor.

Kane decides to stand and fight but finds himself increasingly isolated; the townspeople he has protected for years are unwilling to stand with him against Miller and his gang. As the clock ticks closer to noon, the tension escalates. Kane's desperation grows as he tries to rally support, facing moral dilemmas and questioning the loyalties of those he considered allies. His young wife, a pacifist, faces her own crisis of conscience and must decide where her loyalties lie. The marshal must confront the challenges alone, preparing for a confrontation that will determine not just his own fate, but the future of the town.