Rocky Lane takes on Henry Mason, a crooked railroad agent, who is swindling local landowners out of their property.
An intrepid dog comes to the rescue when a boy's life is put at risk by the greed inflamed by a gold strike.
Frustrated with the lack of opportunities in his hometown, young Jess Harker plans to leave, but sympathetic stagecoach armed guard Race Crim persuades his boss to give Jess the stage driver job.
When they learn that their brother Matt Denton is awaiting trial in California, charged with train robbery, deputies Tom Denton and Fred Denton leave their home in Fort Grant, Texas and head west.
