
A loner travels with his horse companion chasing villains across the frontier.

A former cellmate blackmails an ex-con engaged to an heiress.

A gang of thieves fuels resentment against successful immigrant ranchers.

A murderer frames a rancher to steal his ranch and wife.

On several occasions, the same three men seem to disappear just after a robbery occurs, and Hopalong Cassidy sets out to prove another man is behind the series of robberies.