The local school is causing Hoppy problems. First Bar 20 cattle are stolen when Hoppy investigates a problem there. Then the new teacher arrives and disrupts the routine of the Bar 20 hands. Later with the Bar 20 hands at graduation, the rustlers are poised to strike again. But there is dissension among them and this will lead to the break that Hoppy needs.
as Hopalong Cassidy
as Windy Halliday
as Lucky Jenkins
as June Lake
as Jud Thorpe
as Buck Peters
as Mrs. Peters
as Snooksie
as Artie Peters
as Quirt
as Sutton
as Townsman
as Townsman
as Bar 20 Cowboy
as Townsman
as Townsman
as Townsman
as Townsman
as Townswoman
as Rustler
as Bar 20 Hand
as Rustler
as Slim
