After Custer and the 7th Cavalry are wiped out by Indians, everyone expects the worst. Capt. Nathan Brittles is ordered out on patrol but he's also required to take along Abby Allshard, wife of the Fort's commanding officer, and her niece, the pretty Olivia Dandridge, who are being evacuated for their own safety. Brittles is only a few days away from retirement and Olivia has caught the eye of two of the young officers in the Company, Lt. Flint Cohill and 2nd Lt. Ross Pennell. She's taken to wearing a yellow ribbon in her hair, a sign that she has a beau in the Cavalry, but refuses to say for whom she is wearing it.
A carriage pulls up with arrows stuck in it and dead people inside it.
Indians ambush and chase a cavalry unit. The cavalry stop in the middle of the chase, dismount, and fire on the Indians.
Two gunrunners refuse to sell rifles to Indians unless they pay the money they ask for. So, the Indian chief kills one of them with an arrow and his warriors torture the other one by tossing him into the campfire.
At night time Wayne and his cavalry unit stampede a herde of wild horses into an Indian village and shoot it up. Some of the Indians return fire. No deaths are seen.
