U.S. Marshal Sam Buckhart arrives in North Fork in search of renegade Indians suspected of the brutal killing of a Texas Ranger and his family, but the townspeople are suspicious of him when they discover that he too is an Indian.

Reformed card sharp Julia Massini now runs a respectable boarding house in North Fork, but Sid Fallon is threatening to reveal her sordid past unless she lets him turn the establishment into a saloon and gambling hall.

When escaped convicts hold up the general store in North Fork and take Marshal Torrance hostage, Lucas comes to the rescue.

Mark's finding of the body of a murder victim starts Lucas, his friend Artemus, and Marshal Torrance on a search for the killer.

Lucas looks for answers when recovering alcoholic Micah Torrence returns to the bottle—and turns in his badge.

Two ex-Confederate officers seek revenge on Lucas, who served as prison guard during their internment.

When an expected lawman doesn't arrive from Denver, several gunfighters arrive in North Fork and cause trouble.