Buck Peters arranges for Hoppy, California, Johnny and other cowboys to go to the aid of friends whose cattle are being rustled. Hoppy and California locate the rustlers' hideout and join the gang by posing as outlaws themselves, but must find a way to let the rest of the posse know where they are.
William Boyd
as Hopalong Cassidy
Andy Clyde
as California Carlson
Dick Curtis
as Nevada Teale
Brad King
as Johnny Nelson
Jennifer Holt
as June Winters
Henry Hall
as Jud Winters
Weldon Heyburn
as Henchman Gila
Jack Rockwell
as Henchman Carp
Jimmy Wakely
as Singing Cowboy Pete (lead guitar)
Johnny Bond
as Singing Cowboy Skinny (2d guitar)
Dick Reinhart
as Singing Cowboy-Mandolin Player
Tom London
as Ranch Foreman Waffles
