Margaret Hart, a youthful aspirant for the sheriff"s office in post‑Civil War Western frontier, boards a train bound for the neighboring town to unwind. While she settles in, a raid by ex‑Confederate bandits ensnares her; the crew seizes the passengers. Captured, Margaret joins forces with fellow female hostages to confront and repel the outlaw attackers. In a daring, coordinated effort that tests their resolve and courage for freedom and safety.