F.E. Douglas

In the great white north, a trapper searchers for the thief who has been stealing his furs while a local trader seeks to take advantage of the situation.

There is a feud on the Colonel's ranch between his foreman Longrope and some of the hands. The Colonel is firing those that don't get along with Longrope and it looks like Wally will be next. But things change when Jim overhears Longrope's plan to rob the Colonel. Longrope shoots Jim and this sends Wally into action.

In Hell's Valley, Texas Ranger Captain Wally kills Jose Valdez, leading Jose's brothers, Carlos and Manuel, to seek revenge at the Flores ranch. Wally is wounded pursuing them but is saved by Rosita Flores, his original sweetheart's daughter, who nurses him but secretly seeks his torture for her father, and also for herself. Carlos and Manuel fall for Rosita, but she, in turn, falls for Wally, leading to Carlos accidentally killing Manuel and Don Flores killing Carlos, with Wally and Rosita's relationship solidified.

Jack Logan is the heir to half of a map to a hidden Indian mine. The trader and villain Jean Gregg sends his chief henchman Mack to make life difficult for Jack. Jack is aided in his quest by the heirs to the other half of the map: Helen Holt and her younger brother Billy, and by a uniformed mystery man known as "The Mystery Trooper".