Irene Castle

Spies from Japan conspire to steal the Channing "preparedness" fortune and invade the United States, beginning in New York, then allying themselves with Mexicans across the border. They are stopped by the efforts of munitions factory heiress Patria Channing and U.S. Secret Service agent Donald Parr.

In trying to conceal evidence of her father's forgery, society girl Naomi Warren agrees to marry wealthy promoter Edward Langden, who holds the damning notes; but he dies on the eve of the wedding, and his estate falls to his nephew, Richard. Naomi next makes the acquaintance of a crook who is attempting to steal her jewels, and she persuades him to help her rob Richard's safe. Richard catches Naomi red-handed, but--rather than turn her in--he decides to reform her. Instead, they fall in love, Richard learns Naomi's true purpose in her attempted robbery, and Mr. Warren's forgery is forever secreted with the marriage of Naomi and Richard.

Returning from France after the war, John Tabor informs Palma May of her brother's death and offers the penniless girl his help, but she refuses it, preferring to work as a cabaret dancer. Later, John and Palma meet again, marry, and go west to manage a lumber camp, as instructed by John's wealthy father, Jarvis Tabor. Displeased by John's choice of wife, the elder Tabor tests the couple with difficult living conditions, which eventually discourage Palma, and she accepts the party invitation of Keith Merwyn, manager of the cabaret where she starred. Meanwhile, Merwyn effects a disturbance among the lumbermen, endangering John.

In 1911, minor stage comic, Vernon Castle meets the stage-struck Irene Foote. A few misadventures later, they marry and then abandon comedy to attempt a dancing career together. While they're performing in Paris, an agent sees them rehearse and starts them on their brilliant career as the world's foremost ballroom dancers. However, at the height of their fame, World War I begins.

During World War I, a group of German saboteurs plot to blow up an ammunition dump in New York City. A secret agent sets out to stop them.

Her education in a French convent school completed, plain Justine Spencer returns to New York. There she is shocked to discover that her mother Dodo is a flamboyant musical comedy actress with many male admirers.

Alice Paige lives the Bohemian life in New York's Greenwich Village until she receives a letter informing her that she soon will inherit a fine country estate, provided that she live on the property with her maiden aunt. Alice reluctantly leaves New York for the provincial Southern town of Mayport, where she shocks the local inhabitants with her unconventional ways.

The plot is a loose autobiographical interpretation of the life of Vernon and Irene Castle, interspersed among a typical melodrama of the period

When her surgeon father loses his fortune, Norma Webb (Castle) turns her family home into a boarding house.

Sheila Cardross Malcourt shares only a loveless marriage with Louis Malcourt, but is unwilling to divorce him even to marry the man she really loves, for fear of hurting her foster parents. Instead, she stifles her feelings for Garry Hamil and strives to maintain her marriage. But when tragedy ensues, she finds herself faced with a new dilemma.

Seductress Leila Templeton lures Harleth Crossley into a supposed assignation at his wife Marcia’s dinner party making a fool of them both. Following other compromising situations and his declaration of needing “personal liberty” Marcia divorces him. Still enamored of Leila, he marries her, but she remains a selfish flirt and Otis Vale, whom Leila has driven insane with her teasing, abducts her. In the mad dash away their automobile tumbles over a cliff, killing them both. When Harleth learns that "Mrs. Crossey" has died, he imagines it to be Marcia, and rushes to her. The relief he shows convinces her that their "invisible bond" is intact, and they reconcile.

Helene Palmer and her husband Orrin have grown apart, and she becomes infatuated with bachelor Edward Wadsworth. With the outbreak of World War I, Orrin and Edward enlist, while Helene works as a Red Cross nurse in a small French town. Edward is wounded on a dangerous scouting mission near the town and Orrin carries him to safety. The enemy invades during the night, and Orrin rescues Helene as she is about to be overpowered by a German officer. The dying Edward, morally strengthened by his experience as a soldier, encourages the couple to reunite. Soon after, peace is declared.

After old Trowbridge is mysteriously murdered, his nephew, Kane Langdon, is accused of the crime. Trowbridge's adopted daughter Alice makes every effort to prove Kane's innocence, but to no avail. When Kane escapes from the clutches of the law, Alice works with him to investigate the crime. They soon discover that Judge Hoyt, a great friend of Trowbridge and an ardent admirer of Alice, killed Trowbridge after forging the old man's will to read that Alice would only inherit his fortune if she married the judge. The judge, confronted with the accusation, becomes so unnerved that he confesses to the crime, and all ends happily with Alice in Kane's arms.

During a party held in honor of his daughter Marion, Thomas Sterling announces that he will turn over his shipbuilding plant to the United States government for the duration of World War I. Sterling wants Marion to marry his partner, Hugo Smith, but she prefers Gordon Brett, who proposes to her after the party. Marion's father catches the two in an embrace and orders Gordon out of the house. Later that night, Sterling is found murdered. Gordon is the principal suspect, but Marion refuses to believe he is guilty and hides him in the house. Later she discovers Smith sending a message to the Germans on a wireless hidden in the attic.

Ruined by a powerful financial ring, Farrington commits suicide, after which his daughter Paula vows to take vengeance in her own hands and hunt the man behind the ring. At a house party, Paula meets Dr. Smith, who falls in love with her, but a misunderstanding separates them. Unsuccessful in locating the man but knowing that papers in the house of Van Brunt, one of the ring members, will identify the leader, Paula secures the papers with the aid of Old Bill Fitch, a reformed burglar. To her horror, she discovers that the man is Dr. Smith's father. Paula relinquishes vengeance for love, and Dr. Smith's father, realizing the error of his ways, agrees to make reparations.