With new territory being opened up, the Rangers are assigned to police a homesteaders' land run. They come to grips with a bureaucratic commissioner; a retired Bengal Lancer; and the Sparr gang, who plan to beat the homesteaders out of the valuable river properties.

Laurie Martin (Joan Staley) outwits Ranger Cooper (Peter Brown) and secures the release of her boyfriend Billy Harker (John McCann) from his charge. Humiliated and minus horse, gun and boots. Cooper returns to the barracks to seek to help of his friends Bennett (Neville Brand) and Riley (William Smith).