After a serious quarrel with his father concerning his debts, Wallace Dixon leaves the house in anger, declaring that he will live his life as beat pleases him. That night, Alfred Dixon, the father, hears a noise by the safe in his bedroom, where he is sleeping, and shoots at the intruder who escapes unharmed.

When Marie Louise, the daughter of the town factor, returns home from school, Julio Sandoval, a reckless young half-breed ruled by his animal instincts, develops a passion for the girl, even though she is engaged to Captain McKeever of the mounted police. Meeting Marie when she is alone in the woods one day, the half-breed carries her to his cabin on the mountain top where he collapses from an attack of mountain fever brought on by overexertion.

Louis and August Siever, the twins sons of a German father and American mother, are traveling in Europe when war breaks out. August joins the Kaiser's army, but Louis, a supporter of the United States, is practically made a prisoner in Berlin for a year while he tries to prove his American citizenship. After a violent confrontation with Louis, August steals his brother's passport and leaves for New York with Gerda Anderson, a German spy.

Orphaned after the death of their mother, Nancy Grimm and her baby sister Ellen are taken to the country where Ellen is adopted by the wealthy Walsh family. Nancy keenly feels the loss of her sister, and when the judge rules that she cannot visit Ellen without permission, she throws herself onto a bench, winning the sympathy of young attorney Chester Noble. Nancy is then placed in the Wick's home where she is treated as a servant. Miserable, Nancy cuts off her hair and, dressed as a boy, runs away.

Framed by police inspector Finch and his managing editor, R. H. Steadman, to cover up their own crooked work, reporter John Mull languishes in prison until he escapes, determined to wreak vengeance.

A poor shopgirl is offered a "good time" for a week by the son of her employer. She accepts, but the offer is misunderstood by her brother, who informs the girl's parents of her "fling."

In his crusade against the city’s gambling houses District Attorney Graham runs afoul of lawyer Judson Flagg who owns a notorious joint. Trying to deflect Graham, Flagg introduces his aide Joe Hunter to the D.A.’s daughter Aline. The slick Hunter convinces Aline to marry in secret. When Hunter shots Graham during a raid he extorts a necklace from Aline by confessing their marriage is a sham arranged to politically harm her father and threatening exposure. Hunter flees but Flagg attempts to put the girl in a compromising position, but she is saved in the nick of time.

Wealthy, aging millionaire John Hunter Yates (Frank Morgan) seeks to recapture his youth by pursuing a young actress, Blossom Bailey (Elissa Landi), leading him from America to Europe, where he finances her and a musician lover, only to realize his mistakes and return to his neglected wife, Elinor, understanding their true connection.

Lydia Jansen is happily married to a young customs inspector, but she harbors a dark secret. She is addicted to smoking opium or in slang parlance “hop.” To keep her secret, she willingly pays the blackmail her maid extorts from her having learned of Lydia’s habit through her own fiancée who is part of the ring importing the devil’s brew. Something unknown to all is that the operation is run by Lydia’s father an important politician in the city where this all occurs. As her husband’s investigation tightens the noose on the organization Lydia faces a crisis.

Having been misinformed that all French girls are morally suspect, American soldier David Kendall (Edwin August) is in for quite a shock when he's shipped Over There. After meeting several "nice" Frenchwomen, David returns to the states with a whole new perspective on things. It isn't long before he falls in love with Nenette (Carmel Myers), the daughter of French-born restaurateur Armande Bisson (Andrew Robson). But when Nenette is implicated in a murder, the disillusioned David instantly repudiates her -- and by extension, all Daughters of France.

Chorus girl Rosa Carillo (Carmel Myers) finds herself in dire straits when the troupe she works with is disbanded and her last fifty dollars is stolen. Artist Billy Leeds (Earl Rodney) offers to take care of her, but she's leery of his proposition. Instead she finds work with an Italian grocer, Tony Bonchi (Edwin August). One of the other ex-members of the troupe has Tony arrested on a trumped up charge. Rosa returns to Billy and offers herself to him if only he'll get Tony out of jail.

Nancy Bradshaw (Katherine MacDonald) is a popular stage star who quits her career to marry millionaire clubman Dick Cunningham (Charles Richman). But after a few years of marriage, he starts seeing other women. Figuring that her public was more faithful to her than her husband, Nancy returns to the stage.