Hoppy and Red hide an innocent young Mexican from a lynch mob and then go after the murderer who framed the boy.

When Red Connors buys some arid land on the strength of a promised irrigation project, Hoppy investigates and learns that the promoters of the scheme are guilty of forgery, embezzlement and murder.

Hoppy poses as a cattle buyer in order to break up a ring of thieves who are stealing gold from a smelter.