California Mail

Bids submitted to win the U.S. Mail contract for their stagecoach lines are entered by Banton brothers Roy and Bart, and singing cowboy Bill Harkins. During a stagecoach race to determine who is awarded the contract, Roy, fueled by his greed as well as his desire for Bill's lady friend, resorts to sabotaging his rival's rig in order to win. Bill, having an idea who is behind a recent rash of stagecoach robberies, devises a plan to catch the highwaymen, although not before he is himself arrested for robbery and murder, having been seen committing the crime by impartial eye witnesses.