Trains are being robbed by a gang led by an outlaw on a beautiful white horse. The marshal sent to investigate finds out the horse beings to the girl he's in love with.

Brett runs a protection racket for an unknown boss. When Jeff Hayes arrives and opens a gambling den, they try to shut him down. Unlike the others who have given in, he plans to fight back.

Cowboy Larry O'Day and his sidekick Lucky Smith happen upon a distraught Barbara Hartwell, who is about to be arrested for the murder of her uncle. With Barbara behind bars, Larry is determined to find the real killer and soon finds himself in the middle of a mystery involving crazed German entomologists and a smuggling ring bringing Chinese "picture girls" across the Mexican border for sale to wealthy Chinese bachelors.

Ranger Ray plans to marry stage driver Bill Mason's daughter Mary, but there are problems ahead....

Sheriff John Higgins quits and goes into prospecting after he thinks he has killed his best friend in shooting it out with robbers. He encounters his dead buddy's sister and helps her run her ranch. Then she finds out about his past.