Stephen Westcott and Ed Martin scheme to put Jane Travers' wagon line out of business. They want to use it take over all the wagon- train traffic going west. Hoppy, California and Lucky must make sure that doesn't happen.

William Boyd
as Hopalong Cassidy

Russell Hayden
as Lucky Jenkins

Andy Clyde
as California Carlson

Minna Gombell
as Jane Travers

Morris Ankrum
as Stephen Westcott

Georgia Ellis
as Diana Westcott

Trevor Bardette
as Ed Martin

Pat J. O'Brien
as Jim Ferber

Ray Bennett
as Pete Gregg

José Luis Tortosa
as Don Pedro