Bat is ambushed in the desert by two men, his horse and water stolen. Left to die he is rescued by a farmer who is now the town marshal. Bat is determined to help the young lawman gain confidence in his ability to keep the peace.

Bat is called upon by the daughter of an old friend to investigate his murder in Jackson Hole, Wyoming. The family runs a freight and stage line there but the drivers are being killed for some reason and the line is nearly bankrupt.