In the midst of the Civil War, Lassiter has a plan to get control of California. Working out of St. Joseph, he plans to send forged messages to the troops on the west coast via Pony Express. First he attempts to bribe Pony Express ride Roy Rogers. When Roy refuses he turns to the outlaw Johnson and his gang and this leads to trouble.

Directed by: Joseph Kane
Written by: Norman S. Hall
Runtime: 58 minutes
Tagline: Brave men on gallant horses...risking life and limb on the western plains...to insure the safety of their precious cargoes.
Cast:
Roy Rogers Roy Rogers
Roy Rogers 
Lynne Roberts Lynne Roberts
Ann Langhorne 
Raymond Hatton Raymond Hatton
Horseshoe 
Edward Keane Edward Keane
Senator Calhoun Lassister 
Noble Johnson Noble Johnson
Luke Johnson 
Monte Blue Monte Blue
Cherokee