The Vow

Corinne d'Alys (Daniels) achieves sudden success on the stage and among her many admirers is noted artist Robert Townsend (Menjou). Robert is married to Elsa (Williams), the sister of John Elliott (Stone), the producer responsible for Corinne's rise to fame. The young woman's head is turned by the praise she receives and, despite John's warning against Robert, she permits the latter to paint her portrait and pay her a good deal of attention. John himself loves Corinne and believes that wisdom will come to her with time.

Melia Nobbs, a young Canadian woman, supports both her invalid father Ambrose and brother Henry. When Henry faces arrest for helping himself to his employer's cash, Melia steals the amount from the star of the theater where she has been dancing and offers it to her brother if he will enlist in the army. Henry agrees and goes off to war, making Ambrose proud of his son, but when Ambrose learns that his daughter has been arrested for theft, he disowns her. Melia does not reveal the reason for taking the money and is sent to prison. Meanwhile, Henry fights bravely in France and returns home minus an arm but wearing the Victoria Cross. He finds his sister, weak and worn from overwork, in the prison hospital. Seeing her brother with his medals, Melia realizes that her sacrifices for him and her country have not been in vain, and that in her own way, she has served her country.

A simple born man rises to power in Mexico but when the country is torn by war he travels to the US in search of arms to aid the fight. While there he saves Hiram and his sister Rosa with whom he becomes enamored. He feels the pull to stay with her but leaves her with the assurance he will return when the battle is won.

Shirley Christy, Champion Mile Runner of the World, has become a tramp and finds himself in the mountains of Arizona. In flashback we see that he was framed for cheating which led to his fall. He drifts into a mining camp where by chance he discovers the cheat who ruined him, up to his old tricks. He foils the new plot, wins the girl of his dreams and faces the world with new determination.

An heiress is saved from the predations of a gang of gentleman crooks by a female detective and her father.

Faith’s life is shattered when her lover dies. Her brother Job locks her away in a lighthouse, but she jumps from the tower rather than be imprisoned. Faith's daughter, however, lives on. The girl Eve grows into her teens, sheltered from the world by her puritanical uncle. But Eve nevertheless manages to encounter a young man, Phillip Blake. When Phillip returns for Eve, he has to deal with her crusty, malevolent guardian….

Lisetta, the daughter of a fisherman, lives with her father and brother on the island of Capri. When Serrani, an Italian who has grown wealthy in New York, visits the island, he induces Lisetta to accompany him to America. There he abandons her and she becomes a dancer in an underworld café owned by "Dago" Joe, where she meets the artist Stanford Graham, who employs her as a model. Meanwhile, Lisetta's brother Domenic comes to New York to avenge his sister's dishonor.

After his defeat at the hands of "Spider" Flynn, the welterweight champion of Europe, boxer Jimmie Dolan and his trainer, Thomas Jefferson Jones, leave for a principality near Paris. Having lost all their money on the fight, Jimmie accepts Count Conrad's offer to impersonate Prince Frederick in return for a large sum of money.

Old Captain Bill and his wife have an only son, whom they idolize. He loses all his money at gambling and drinking, and determines to do better in the city. After a short absence he writes his people that he has secured a good position, is saving money, and will be home before long. A year or two later he arrives in town and on his way to his home passes the old saloon he used to patronize. He cannot resist the temptation, and goes in. He falls in with a lot of bad fellows and is robbed. Ashamed to go home, he ships on board a sailing vessel.

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.

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."

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.

Glory Quayle, a natural-born mimic, leaves her country home, reaches London, goes on the stage, gains fame and affluence. John Storm, her country sweetheart, believing he has lost Glory forever, enters a monastery, tries to forget her, cannot kill his love, returns to the world, becomes a famous slum worker and friend of the poor.

When Donald Bayne, known in the North as The Wolf, loses his cabin to Steve Nolan in a backwoods court, he threatens and thrashes the new owner, then leaves him to tend to his traps. Upon his return, he discovers that Nolan has been killed in a shooting accident and that Bess Nolan, his niece, has moved into the cabin with Rose, her sister's child. Unable to evict her, The Wolf camps out next to the cabin, but soon realizes that this act has compromised her honor in the town. To correct the situation, he forces her into marriage, but she maintains a safe distance from him. When Bess's sister and "Snaky" Burns, her brother-in-law, kidnap Rose for use in their criminal activities, Bess implores Donald to intervene.

Robert "Bob" Wesley horrifies his father, Admiral John Wesley of the Naval Advisory Board, by failing his examination at the Annapolis naval academy. Bob seizes the chance to redeem himself, however, when he overhears Hanson, the butler, plotting with German agent Count Von Ornstorff to deliver his father's plans for the Atlantic coastal defenses to German Baroness Von Hulda. In Baltimore, Bob meets the baroness' ship and, with the aid of an old college professor, makes her his prisoner. Having impersonated a woman in the college play, Bob disguises himself as the baroness, rendezvous with the spies, and obtains the plans.

While waiting in a hotel lobby for instructions from his government, Ludwig Schumann, an agent of the Black Legion, is enchanted by Marion Washburn, the daughter of a Texas senator. As he is about to speak to the girl, Schumann is stunned to see a young American enter who could be his double. The American is James Walbert, whom Schumann's contact mistakes for the agent. The contact passes to Walbert a photograph of a woman spy, Wanda Bartell, whom the agent is to meet aboard a steamer. Walbert realizes the mistake and determines to protect his country.

In dire financial straits, businessman John Baird considers liquidating the bonds that are held in trust for his little daughter Margery. Failing to comprehend her husband's desperation, Virginia Baird refuses his request and, upon overhearing his lawyer advising him to utilize the bonds without consulting her, she decides to place them in the hands of George Drake, an old friend. Drake hijacks the securities, however, and their disappearance leads to the break up of the Baird's marriage, resulting in Virginia leaving the house. Attempting to console her father, Margery sets out on her pony to bring her mother home. But she is held up on the road by Captain Kidd Jr., who adopts her as his first mate, and the two children take up residence on a grass hut on a nearby island.

Nancy Glenn is a pupil in Pop Hogland's school for crooks. When, attired as a boy named "Spider", Nancy fails at her lessons as a pickpocket, Pop decides to pair her with Pliny Drew, a graduate thief and swindler.

During a raging storm, a baby is washed up on shore on an island in Greece and is adopted by the wealthy Stanhopes, who name her Lorelei. Eighteen years later, Lorelei, now a woman, invites her school friends to spend their vacation at her villa. One of her guests, Julie, is insanely jealous of Lorelei. One day Gerald Waldron, a disenchanted society fop, sails by on his yacht, accompanied by his social-climbing friend, Hartley Royce. Seeing Lorelei and her friends swimming, they decide to go ashore. Both Gerald and Hartley fall in love with Lorelei, and Julie rages, finding herself relegated to Hartley. Together Hartley and Julie plot to separate the lovers.