Julia Newman goes home to Arizona, riding one of the last stagecoaches in 1912. As she anticipates a joyful reunion with her brother, Oliver, a bookkeeper at the High Desert Mine, a lone bandit holds up the stagecoach. Sheriff Adam Scott, whose proposal Julia once rejected, says he has reason to believe that Oliver was involved in the robbery. And when Oliver doesn't appear to welcome her home, Julia knows she must find him before Adam does.