In 1866, prospector Tom Corbett returns to his hometown of Laramie, Texas, now under the brutal control of gangster Jason Scott and his violent son, Junior. With his brother Jeff, a struggling drunk cared for by their maid Mercedes, Tom seeks to overthrow the Scotts' tyrannical rule and restore peace to the town.

Four people are killed in a saloon hold-up. The townspeople pin the murders on local no-count black sheep Chester Conway. Lawyer Jeff Plummer and prostitute Polly Winters don't believe that Chester is guilty of these crimes, so they hire smooth and suave gunman Silver to prove Chester's innocence and find the real killers.