Madge Black witnesses her best friend Nan Westland, kissing her husband, successful lawyer Jeffrey Arnold Black, a successful lawyer, and orders Nan from the house. Angered by her refusal to let him explain, Jeffrey leaves his wife and son David, Jeffrey meets Nan on a westbound train. Though he does not love her he offers his protection and the next year they welcome a son, William. Nan pleads with him to divorce Madge and marry her for the sake of their son, but he will refuse. Distraught, she marries Ben Richardson, a client of Jeffrey's client, leaving their son behind. Twenty years pass with David becoming a responsible adult while half-brother William now known as “Rodeo” becomes the leader of a lawless band of robbers. Meanwhile Ben Richardson and Nan have become owners of Chanceland, a gambling-house in Colorado and it is there that things reach a climax between the near identical brothers.
Cal Stanley goes undercover as a beef buyer in order to catch the gang responsible for stealing the area's cattle.
Trying to trick Ma (Lydia Knott) and Mary Winters (Allene Ray) into selling their rundown ranch, which will be in the path of a future railroad, Underwood (Charles K.French) hires Keno Creager (Albert Smith) to impersonate Jimmy Winters, not seen by his mother and sister for many years.
Cal Roberts can ride anything with four legs. He enters the contests held at big rodeo. He wins all honors and meets a girl who races horses to help her father clear pressing debts. Complications follow, but Cal wins the girl.
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.
Not realizing he is a bandit The Girl, owner of the Polka Saloon, falls in love with Ramerrez. Trapped by a snowstorm Ramerrez is forced to stay the night with The Girl. Upon discovering the situation jealousy drives dancer Nina Micheltorena to reveal his identity and whereabouts to Sheriff Jack Rance, who also loves The Girl. Ramerrez is shot trying to escape, and though she denies his presence she shelters him. Drops of blood prove lead to his discovery. Taking a chance The Girl wins both their freedom in a poker game with the sheriff. However incited by Nina, vigilantes are about to lynch Ramerrez when the sheriff interferes, explains his bargain, and restores him to The Girl.
Vic Stanley, a wandering cowboy, is found by Clint Taggart and his daughter, Amy, after he has escaped from a band of rustlers. Upon recovering his sight from a desert sandstorm, he sees and falls in love with Amy and becomes resolute in his decision to uncover the identity of the rustlers and particularly their leader, "The Eagle." Though blind during his capture, he nevertheless recognizes the voice of The Eagle in McElroy, a leading banker. After another escape from the gang, Vic manages to save Taggart and Amy from The Eagle's sticky clutches, exposes their operation, and proceeds on course with Amy.
Bill Merritt and his pal, Chewin' Charlie, notice a touring car passing them on the road. Soon the car stops, and the party sets out after a jackrabbit wanted by an elderly lady in the car. Bill, realizing the brakes have slipped on a downgrade, rescues the runaway car and its occupant, Mrs. Gordon, and wins the lady's admiration. Invited to the hotel of millionaire mine owner Andrew Gordon, Bill becomes interested in his daughter, Cleo, but is told that the man who aspires to be her husband must possess wealth. That night Bill overhears a plot to take over a strip of land between Gordon's mine and that of his enemy Tom Middleton; Bill and Charlie set out to stake their claim, and after subduing "Fraction" Jack, they register the claim. Bill persuades Gordon to buy out his claim and saves Charlie from claim jumpers.
After inheriting his uncle's ranch, a cowpoke manages to capture a ghost of the range, break up some cattle rustlers, and win the girl.
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.
Ranger Job "Blue Streak" McCoy helps a miner and his pretty young daughter who are trying to protect their valuable mine from a gang leader who wants to take it.
Bart Carson is in love with Lou and even goes to jail to save Walter A. Walker, a man she says is her brother but who is really a husband who has deserted his wife and two children.
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.
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.
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.
Morton, encouraged by Watson, who wants to expel him from the bank, is the president who uses the bank's money for his private speculations. He gets very involved and when the matter is brought to the attention of the directors, he is asked to oblige to the default or go to prison. Morton would commit suicide except for his stenographer, Mary Lane, a beautiful and intelligent girl. She takes him in and discusses the matter with Morton's son, whom she loves.
When Pinto reaches her eighteenth birthday, the five wealthy Arizonans who adopted her upon the death of her parents decide that ranch life will never make a lady of her. Their old friend Pop Audry, formerly of Arizona and now a member of New York society, agrees to provide Pinto with the necessary education. Accordingly, Pinto and her cowboy nursemaid Looey are dispatched to New York where they lose Audry's address. ...
Cowboy Billy Fortune is in love with Hope Beecher, who prefers Billy's friend Ben Morgan, but resists his advances because of his fondness for drink. Hope's discontent is echoed by the town wives' public outcry against drink. To divert their interest, Billy is nominated to make love to their leader, widow Fay Bittinger, who has already disposed of four husbands....
The 15-chapter plot follows, in a fanciful manner, the General Fremont expedition into Spanish California to acquire California for the United States, and the discovery of gold at Sutter's Mill. Chapter titles: 1. Soldiers of Fortune 2. Red Men and White 3. A Night of Terror 4. The Empire Builders 5. A Web of Lies 6. Demetroff's Vow 7. Facing Death 8. Under the Bear Flag 9. A Ride of Peril 10. Yellow Metal and Blue Blood 11. Gold Madness 12. Crimson Nights 13. Vigilante's Justice 14. For Life and Love 15. Trail's End