Dynamite -- Universal's answer to Warner Bros.' canine star Rin Tin Tin -- and his owner Jerry Matthews (Edmund Cobb) come to the aid of a beleaguered rancher in this typical low-budget "doggie melodrama" set in the West.
A soldier returns home from World War I with a beautiful black horse that he saved on the battlefield, and names Thunderhoof. He enters the horse in a local race, hoping to earn enough money to save the family ranch of the girl he loves. However, the crooks intent on taking the ranch manage to capture a notorious wild horse and enter it in the same race, believing that it can beat Thunderhoof and thereby ensure that they're able to take the ranch.
Billy Haven, a young rancher, accidentally discovers that clay found on his ranch will, when mixed with water, become the most beautifying mud-pack cosmetic that any young girl, or old woman, could desire. Then the land-grabbers, clay-speculators, cosmetic companies and a show girl or two show up to get a piece of the action.
Tom Mix plays a California breeder of polo ponies in love with a society gal. The cowboy saves the day when a member of her brother's polo team is injured during an important match. Mix immediately replaces him and amazes the audience with his spectacular riding stunts.
From Death Valley in the Mojave Desert to Mount Whittier, the outlaw gangs are wreaking havoc on the gold and money shipments from the mines and ranches. Wells Fargo organizes an express service that will insure the shipments and ensure a guaranteed delivery. Granger Hume is hired to help Wells-Fargo deliver on their promise.
In a plot to take control of the Lazy Y ranch, which holds water rights to the local area, a rancher kidnaps the Lazy Y owner's daughter. The ranch foreman manages to eventually foil the plot and get the girl.
Hired ranch hand Tex Smith is smitten with Lucy Blake, who lives in the cattle settlement of Marco. Meanwhile, Indian chief Brave Bear despises the encroachment of white people and conspires with Sam Hardman to steal the town's cattle during a rodeo.
The only key to a young woman's fortune lies in a marking on the leg of a horse called The Ghost of the Gauchos. But the woman's guardian, her uncle, plots to steal her wealth.
Bert Lane and Margery Murray are in love, but her aunt insists she marry either a society man or a hero, so his hands decide that he will be a made-to-order hero - but society man Fred Van Ralt keeps getting the credit.
Heralded as a "Universal Thrill Feature," this minor outdoor melodrama starred Dynamite, one of canine phenomenon Rin Tin Tin's legion of imitators. Veteran actor Edmund Cobb headed the human cast as Captain Tom Grant, a Texas ranger impersonating an outlaw in order to infiltrate a gang of smugglers.
Lone wolf, who is stirring up the Indians against the wishes of his elders, gets the job of scout at the fort. When he hears of the approval of the new reservation, he sends his men to trap Scott and his troop before they can deliver the information.
A rodeo rider arrives in Toptown to compete in the local rodeo. He meets a pretty young girl who, with her crippled father, runs a merry-go-round for the town's children. The town bully, who has designs on the young girl, tries to drive off the cowboy but is beaten senseless in the resulting fight. Soon afterwards, however, the girl's father is found shot, and the cowboy is arrested for the crime.