A damsel-in-distress Western melodrama and a stirring picture of railroad construction and the mining country, with a Snidely Whiplash villain performing dastardly deeds, a spunky and gritty Polly Pureheart heroine and a brave Handsome Harry hero...and filled with action, romance, adventure, bravery...and perils.
In this Western, Frank Keenan has a dual role -- kind-hearted gambler John Lynch and evil bandit Big Rivers. The only person who realizes there is a resemblance between the two is dance hall girl Nita (Maude George), who was abused by the outlaw and cared for by Lynch.
As an entomologist and all-around wimp, Orlando Winthrop gets little respect from his wealthy parents. But when business needs to be taken care at the Winthrop sheep ranches out West, Orlando is raring to go. Upon his arrival, the ranchers see Orlando as an easy mark, but it turns out they're wrong. They try to take Orlando's money in a poker game -- and wind up broke themselves.
Left in the care of his half-breed brother, Buck, by his dying mother, Wallace Layson has no knowledge of his family history. His father, knowing that his son will inherit a ranch on his 21st birthday, tries to secure the property for himself by persuading a dance hall girl to come between the boy and his fiancée. When Buck learns of the plan he decides to foil it without his half-brother knowing.
Returning to his father's cattle ranch after the excitement of serving in combat overseas, Bud McGraw becomes restless, and his father decides to send him to an old friend who commands the Border Police in Texas. On the way he meets Peggy Hughes, accompanying her Uncle Graham, a customs inspector, and he retrieves her hat from the rails of a train. At the headquarters, numerous scrapes and fights win him the admiration of, and friendship with, the men. Lazaro, a Secret Service agent, invites Mrs. Graham and Peggy, who are staying at the border station, for an automobile ride, and they are captured by bandits and held for ransom. Bud and his pals deliver the ransom and discover that Lazaro is the bandit chief. Lazaro refuses to release Peggy, but a jealous rival, Nita de Garma, causes his downfall and shoots him as the Border Police arrive to rescue the party.
Mollie Owens, engaged to sheriff’s deputy Dick Calvert, is taken captive by outlaw Monk Turgis and imprisoned in the "death cabin” so called because everyone shunned it after of two mysterious murders were committed there. Turgis and his friend try to scare money out of Mollie's mother, but Dick sets out on their trail. He sees one of them enter the cabin and immediately investigates.
The manager of the American oil company quits out of fear of El Jaguar, the bandit who is terrorizing the Mexican countryside, Phil Jordan is sent in his place. Phil arrives with his younger sister Nancy, when the bandit makes a unwanted pass towards the girl, Phil beats him, causing El Jaguar to vow revenge. Waiting until Phil's bride Beth arrives, El Jaguar captures all three Americans and sadistically forces Phil to choose between leaving with his sister or his wife. Beth volunteers to remain as a sacrifice, and Phil and Nancy ride off, soon to encounter a troop of rangers. They all rush back to rescue Beth, but before they arrive, the bandit is killed by a woman whom he had abducted and violated on her wedding night.
Discouraged by the loss of his job and unable to find another young shipping clerk Clark heads west, promising his mother that he will send for her when he finds a decent job. Instead, he falls into bad company. Finding it hard to make money he first works in prospecting without success until finally securing a job in a mine.
Dan Melton is in love with Daisy Dale, who, being of a coquettish disposition, permits herself to become infatuated with Soapy Smith, gentleman gambler. Sheriff Melton is greatly worried by the continual holdups committed by Black Jack, a desperado, who has become the terror of the mountains. His excursions in quest of the bandit compel him to neglect Daisy somewhat. One day Daisy meets with an accident while riding and applies for assistance at a lonely shack in the hills. To her astonishment Soapy Smith opens the door. She accepts his invitation to enter. Once she is inside, however, Soapy betrays his real character and attacks her. Daisy's screams are heard by Morristette, a Mexican, who rushes in and intervenes. Smarting under the blow Soapy deals him, he gallops to town and informs the sheriff. On arriving at the shack to rescue his sweetheart Melton finds that Soapy Smith and the long-sought desperado. Black Jack, are one and the same.
Jim Blake, the playboy son of a New York millionaire, heads west to prove himself a man. He goes to work on his father's ranch in Wyoming, and eventually wins over the locals by turning the tables on a town bully and trying to collect damages from a railroad magnate, whose trains have killed many of the Blake ranch's cattle. When the railroad refuses to pay, Jim comes up with a plan that will make them pay far more than they originally had to. Problems arise when he falls in love with Alice, the railroad magnate's daughter.
Moran, blind to ambition, has been a long-time friend of the widow Casey. In his own way Moran likes the widow, but his strongest affection is for her young son. The boy, in turn, loves the man's friendship and the knife the man has given him. The time comes when the widow and Moran fight.
Mining foreman Jimson is fired by Pedro and Madro when they falsely accuse him of trying to steal ore. When they attack him, he is forced to strike back, and they swear revenge. Their enmity intensifies when Jimson rescues Nina, a Mexican girl, from Pedro's unwanted attentions.
Deputy Sheriff Martin of Arizona is in love with Lola a waitress at the Gold Dollar restaurant. However, complications arise when Martin encounters James Kinney, a wanted murderer working under an assumed name in the local mine. Deputy Martin discovers that Kinney is also interested in Lola, fueling a rivalry between the two men. During a mine accident, Kinney is placed in a dangerous situation and Martin must decide whether to act on his personal feelings or uphold his duty as a lawman.
Jeremy Dexter, Sheriff of Sherman County, warns Lanky Mason to leave town after being involved in a shootout the night before killing a Mexican. The sheriff tells Lanky that although he remembers that Lanky had saved his little daughter's life by swimming across a stream during a flood and that Lanky's heroic work during a time when the smelter caught fire had saved the town from destruction, it was imperative for the good of the town that Lanky leave.
The sheriff loses his office and a new sheriff comes in. Now the ex-sheriff is going bad, drinking, etc., with no ambition. The tough guys take advantage of his loss of ambition and indignities pile up on him and he makes no protest. He meets the new sheriff's little boy and they become fast friends.
Jerry Kane, a man down on his luck who inherits money but selflessly gives most of it to Maizie Wallace and her sick father. The money is then stolen by two crooks, Pinny Falk and Big Dan Jaffry, leading to a series of events involving a pursuit, mistaken identity, a fight, and a rescue by a posse. Ultimately, the crooks are captured, the money is recovered, and Jerry and Maizie agree to share their future together.
Miner Jim Mann is indifferent to the new baby and sees him as nothing more than an additional burden. His wife Lucy looks after the baby and is unable to help much with the work, and Jim's dinner is often late. He grows to dislike the child and refuses to hold or pet him. Dawson, another miner, and his wife and their small baby occupy the cabin on the adjacent claim.
Gold miner Edd Denmeade loves Lucy Watson, the sister of the official mining claim recorder. Denmeade suspects Watson of killing his father, who after a poker game was shot by a gambler "who shuffles with one hand." The real murderer, Sam Spralls, has convinced Watson that he killed Denmeade and threatens to expose him unless Watson assigns him all the gold claims. Spralls assembles a band of killers to jump the claims when Watson complies. Eventually, Denmeade learns the identity of the killer when he sees Spralls shuffle a deck of cards. He forms a vigilante party and rids the community of Spralls and his gang.
Johnson, a pharmacist, makes an illicit traffic in cocaine and morphine, which he cleverly sells through his drug counter to a select clientele. In his richly furnished office, the head of the Kurson Chemical Company counts the receipts of Kurson Consumption Cure, a patented drug that contains a large amount of morphine.
After years of scientific research Thomas Kellner, an eccentric chemist, succeeds in manufacturing an imitation diamond, with the help of his son Jack.