An evil gang is involved in both cattle rustling and the robbing of stagecoaches. Hoppy must stop them without help from the sheriff who turns out be a major outlaw himself.
| Actor | Role |
|---|---|
 William BoydHopalong Cassidy | Hopalong Cassidy |
 George 'Gabby' HayesWindy Halliday | Windy Halliday |
 James EllisonJohnny Nelson | Johnny Nelson |
 Muriel EvansMary Stevens | Mary Stevens |
 Onslow StevensPecos Kane | Pecos Kane |
 John St. PolisSheriff Sam Corwin | Sheriff Sam Corwin |
 Claude KingJ. P. Ridley | J. P. Ridley |
 William DuncanBuck Peters | Buck Peters |
 Clara Kimball YoungRose Peters | Rose Peters |
 Al HillHenchman Kit Thorpe | Henchman Kit Thorpe |
 Ted AdamsHenchman Jim Trask | Henchman Jim Trask |
 Jack RutherfordHenchman Lewis | Henchman Lewis |
 Ernie AdamsIdaho | Idaho |
| LLita CortezConchita | Conchita |
 Joe RicksonSaloon Henchman at Peephole | Saloon Henchman at Peephole |