Jim Bannon and his partner own a stagecoach line. With the coming of the telegraph and the end of the Pony Express, two men plot to take over and get the new mail contract. When Jim's partner is murdered and Jim's name is written in the sand beside the body, Jim is arrested. At his trial Whip brings surprising evidence that clears Jim and the two plotters are soon arrested.
A newspaper editor takes on the cause of oppressed migrant Mexican fruit pickers.
Ex-confederate officer Clay Fletcher jumps at the chance to reunite with his once lady-friend, Susan Jeffers, when his father, Judge Fletcher, sends him on an errand to El Paso, Texas to get the signature of Susan's father, Judge Jeffers, on a legal document. Once there he finds the judge has become a drunk and a laughing stock, doing the bidding of local magnate Bert Donner and his running dog, Sheriff La Farge. Just as Clay starts straightening out the town's problems, events occur which force him to abandon the legal system and instead adopt the murderous tactics of a vigilante.
A private stationed in Hawaii gets involved with the general's engaged daughter. In order to avoid a scandal, the pair break up, but meet again years later when he's at West Point producing the annual play that turns out to star her.