Five Thousand Dollars on One Ace

Monte Walsh is an aging cowboy facing the ending days of the Wild West era. As barbed wire and railways steadily eliminate the need for the cowboy, Monte and his friends are left with fewer and fewer options. New work opportunities are available to them, but the freedom of the open prarie is what they long for. Eventually, they all must say goodbye to the lives they knew, and try to make a new start.

While passing through the town of Bannock, a bunch of drunken cattlemen go overboard with their celebrating and accidentally kill an old man with a stray shot. They return home to Sabbath unaware of his death. Bannock lawman Jered Maddox later arrives there to arrest everyone involved on a charge of murder. Sabbath is run by land baron Vince Bronson, a benevolent despot, who, upon hearing of the death, offers restitution for the incident.

When vigilante land baron David Braxton hangs one of the best friends of cattle rustler Tom Logan, Logan's gang decides to get even by purchasing a small farm next to Braxton's ranch. From there the rustlers begin stealing horses, using the farm as a front for their operation. Determined to stop the thefts at any cost, Braxton retains the services of eccentric sharpshooter Robert E. Lee Clayton, who begins ruthlessly taking down Logan's gang.

A pioneering family fights back against a gang of vicious outlaws that is terrorizing them on their newly-built farm on the plains of Montana.