Theodore Roosevelt's newly built Elkhorn Ranch is threatened by a powerful neighbor who attempts an underhanded land grab. To save his ranch, Roosevelt must confront his neighbor, the Marquis de Morés, and his beguiling wife, Medora.
Theodore Roosevelt's efforts to become a cattleman are jeopardized when a neighboring rancher accuses his men of rustling cattle. To save Elkhorn's reputation, Roosevelt and his men must capture the thief and return the stolen livestock.
After Theodore Roosevelt's new horses are stolen, he joins a posse of vigilantes to hunt down the thieves. When they capture a lone outcast who swears his innocence, Roosevelt learns firsthand that frontier justice isn't always just.
After suffering a great personal loss, 25-year-old Theodore Roosevelt abandons New York for the wild frontier. In the lawless Dakota Badlands, he establishes the sprawling Elkhorn Ranch and attempts to remake himself into a cattleman.