Steve Beaumont, an operative for the Cattleman's Protective Association, is assigned the difficult task of breaking up a murderous gang of rustlers led by Ed Brock and Strang. He takes Sheriff Webb, Judge Baxter, and rancher Ann Houston into his confidence, and works his way into the rustler stronghold and confidence by "turning rustler" himself.

Charles Starrett
as Steve Beaumont

Lorna Gray
as Ann Houston

Bob Nolan
as Bob

Dick Curtis
as Strang

Kenneth MacDonald
as Ed Brock

Jack Rockwell
as Sheriff Webb

Edward LeSaint
as Judge Baxter

Francis Walker
as Henchman Ellis

Eddie Laughton
as Shorty - Bartender

Lee Prather
as Tom Andrews