In an effort to compete with Republic's popular songfest Westerns, fours music numbers -- including Tumbling Tumbleweeds -- were added to The Old Wyoming Trail, an otherwise average Charles Starrett vehicle. No singer, Starrett left the vocalizing to his sidekick Donald Grayson and the popular Sons of the Pioneers. En route to purchase a herd of cattle, Bob Patterson (Starrett) and his sidekick Sandy (Grayson) get in the way of a scheme to defraud the local ranchers of their possessions.
Arizona Ranger Larry Grant is posing as an outlaw while hunting for an outlaw gang, secretly led by Lance Corbin, that is stealing silver in Mexico and smelting it into bars for sale in the United States.
Texas Ranger Ranny Maitland's father is feuding with his neighbor Lockhart. Pretending to be on Lockhart's side in the feud, Ranny goes to investigate. Meanwhile is father is murdered and Lockhart arrested.
After Slug Raton takes Brady's horse, hat, and gun, the Sheriff arrests Grady thinking he is the outlaw. Slug's men chase them to Ricard's ranch which they burn. After Grady saves the Ricard's from their burning house, Betty Lou saves Grady from hanging at the hands of the masked vigilantes. Grady recognizes the voice of Raton among the vigilantes and now knows who to go after.
The big bad cats are the villains/Indians, and the little mice are the settlers going west in their little covered wagons, and the Indians are on a rampage about it. Things look dark indeed for the settlers when the likes of Buffalo Bill, General Custer and Daniel Boone are unable to defeat the attacking cats but...wait...up in the sky...here comes the singing, flying mouse...Mighty Mouse. Not recommended for Revisionists.
After claim jumper Sanders kills a miner, he changes clothes with Perry. In pursuit, the Marshal kills Perry claiming he was the murderer. Setting out to clear Perry's name, Jimmy works his way into the outlaw game. But Sanders overhears Jimmy's plans and he and his boss Morgan set a trap to kill Jimmy.
Monte Hale is cast as Ted Post, a Texas marshal who's on the trail of embezzler Larry Forester (Myron Healey). His search takes him to a remote frontier town that serves as an outlaw hideaway. All previous lawmen have been disposed of by town boss Bruce Burnett (Damian O'Flynn), who demands a hefty price for his services.
Landis kills Tom Ross but fails to get his money. Now he is after the Ross ranch for the money he knows is there. When he tries to evict Ross with gambling IOU's, Bill drives him away. With the Ross cowhands out after his rustlers, he finds the money. But Bill is right on his trail.
Whip Wilson only gets to crack his trademark weapon once in this economic Western filmed in toto at the Iverson Movie Ranch in Chatsworth, CA. A government agent, Wilson arrives in the near ghost town of Tunis, where his friend is in trouble with a couple of horse thieves. The latter are also terrorizing a homesteader, Texas Milburn, and his wife, Ruth, and when the female sheriff Alice Long interferes, she finds herself taken hostage.
Bill Bangs and his Negro valet, George Washington Black, stray into a mining town and are arrested when they attempt to steal something to eat. The sheriff promises them their freedom if they solve the mystery of a haunted house near the town. Bill agrees.....
The Royal Mounties are called in when one of the armored cars owned by Maxwell, containing a gold shipment, disappears with driver George Hill suspected of trying to get away with the gold. Actually, Maxwell and two henchmen had poured acid on the brake lines, causing the car to crash. Genevieve, daughter of the Mountie chief, suspects Maxwell and Thomas Hatch, president of the bank shipping the gold, but she quickly becomes more trouble than help to Sergeant Renfrew in charge of the investigation. Renfrew and Constable Kelly drive the next shipment but Maxwell plans to make them crash the same way as Hill did. Renfrew steers the vehicle into a hillside and this gives him an idea of what happened to the other car.