Brenner, Doyle and Sandy are a trio of bank robbers, who've come up with a really slick plan. But Brenner, the mastermind, hasn't taken Doyle's itchy trigger finger into account.

Comanche Indians raid a shepherd's camp, killing all the hands except an itinerant cowboy named Dundee. He doesn't have to wait long before he learns why he have to wait long before he learns why he was spared. The Indians plan to trade him for horses and guns.

Widow Amy Lawson's son, a Cavalry Officer, is killed in action. Amy blames Major Sinclair for her son's death. The major isn't just the Cavalry commander - he's Amy's fiance.