A troubled young woman comes to live with her estranged father on the New York waterfront. A tough sailor falls in love with her, sparking conflict between her father and her suitor. What neither knows is that she has a secret that could cause her to lose both of them.
Oscar Krug is looked upon with suspicion by his neighbors because of his German name. When the US is drawn into the war with Germany, he enlists and travels the seas with his wife, Alice Morse. During a submarine attack Alice is snatched from Krug's side by a German officer. Krug now lives to have his revenge, and when the opportunity presents itself, he will have it.
Wealthy Bruce MacAllister, goaded by his fiancée, Helen, into proving that he is a man of action rather than a pampered youth tells his estate administrator, Eugene Preston, that he is going east for a meeting. Instead, Bruce dons a disguise and infiltrates the San Francisco underworld. Mistaken for master criminal "The Chicago Kid", he finds himself leading the gang in a robbery of his own fortune in diamonds. Discovering Eugene's intention to steal the jewels for himself he engineers it so the loot changes hands many times. Getting wise, Helen summons the police, the criminals are apprehended, and she sees Bruce in a new light.
Oliver Beresford is a stern, Puritanical, and uncompromisingly rigid father. When shameful stories about his daughter Judith surface, rather than determine whether the stories are true, he bans her from his house. Her brother David, a pusillanimous reprobate, has secretly married and fathered, then abandoned, a child. Judith takes care of the child and finds a way to restore her family through the love for the babe.
Princeton Hadley feels obligated to pay alimony to Judith, the widow of his deceased friend Billy Westover, due to favors Billy had done for him in the past, even though the law doesn't require it. Billy had lost his fortune and was recently divorced from Judith before his untimely death in an accident. Princeton later meets Judith, unaware of her identity, and falls in love with her.
Donald marries Maizie in order to save his brother. The couple go to Arizona where their love ripens, and through Maizie's prayers, Donald regains his health. Mrs. Van Wye then comes to visit and tells Maizie that she is preventing Donald from assuming his rightful place in society. Crushed, Maizie starts across the desert alone, and when Donald learns of his mother's dreadful behavior, he follows Maizie and begs her to stay.
Naive Eileen Rodney (Dorothy Dalton) is duped by the high-minded talk of Raymond Moreland (William Conklin). But when she discovers that he wants to take her to India without the benefit of a marriage license, she balks and instead weds her guardian, John Harland (Thurston Hall). However, she had written some letters to Moreland, and these come back to haunt her when he tries to use them for blackmail.
Ne'er-do-well Homer Cavender ventures to the city from Mainsville in an effort to find fame and fortune. Both elude him, and after clerking for two years, Homer returns home for a vacation. Impressed by his flashy clothes, the townspeople assume that Homer has achieved success. Attempting to win Rachel Prouty from his rival, Arthur Machim, Homer continues the deception by announcing that his employer, Kort and Bailly, has dispatched him to enroll stockholders for a proposed new plant to be built in Mainsville. Machim discovers the sham and denounces Homer as a crook.
Freddy Wetherill and his bride, Hyla, quarrel at her mother's beach cottage, and Hyla sends her new husband home alone. Seeking distraction from his troubles, Freddy enters a vaudeville theater where Undine, "the diving Venus," and her trained seal, Bubbles, are performing. Outside the theater, Freddy meets Undine's fiancé, George Fitzgerald, and becomes involved in George's effort to hide Undine's seal from a bill collector armed with an order of attachment because of an unpaid hotel bill. Complications arise when Freddy Wetherill's dying rich uncle, Cato Dodd, notifies him that he wants Hyla to nurse him. To insure he stays in his uncle's will, Freddy substitutes Undine for Hyla and takes George along to act as his "valet." Naturally, Bubbles comes along, too. This movie is presumed to be lost.
Roger Moran, a member of a gang of thieves headed by Mike Wilson, is released from prison after having served a two-year sentence. He has learned his lesson and vows to leave his life of crime, but his girlfriend Betty Palmer--also a member of the gang--won't leave "the false road".
Agnes Cuyler, a cabaret singer in New York who loathes her work, is fired for slapping Grant Haywood, a customer from the West who tries to kiss her. Haywood begs forgiveness and after glorifying the clean Western life, proposes. To escape her circumstances, Agnes accepts, but soon learns that Haywood is a brutal drunkard.
After serving 5 years in prison for embezzling church funds, Dr. Ephraim Nye returns to Ostable and the scornful gossip of its residents, led by Althea Bemis. There is a typhoid epidemic, and Dr. Nye believes it to be caused by the water in a pond that Judge Copeland, the brother of Dr. Nye's dead wife, Fanny, wishes to use as the source of municipal water supply. Only Katherine Minot supports Dr. Nye, but biologists prove him correct; and Dr. Nye confronts Copeland with proof that he went to prison to protect Fanny, the actual criminal. Copeland finally consents to the marriage of his daughter, Faith, to Tom Stone, the son of his enemy; and Katherine spreads the news of her engagement to Dr. Nye through Althea.
Lawrence Revel, celebrated in society circles for his success with women, is devoted to his son Dick and objects to his marrying Nellie, a cabaret dancer. To prove her unworthiness, Beau asks his son not to see her for 2 weeks. Unwittingly, Beau falls in love with the girl, but his attentions are refused.
Harry Elrod takes a job as a bellboy when he is disinherited by his uncle and fails in his efforts to elope with actress Kitty Clyde. He causes so much confusion that Uncle Elrod buys the hotel so that he may fire Harry. But Harry induces the other employees to strike until Uncle Elrod consents to Harry's marriage to Kitty.
Infamous Singapore smuggler Bully Brand possess a beautiful pearl necklace that is desired by Chinese merchant Chan Chang for his daughter Pain, a young white girl he had adopted. Warren Bradford, Brand's ward, returns from college and falls in love with Chang's daughter.
Amy and Matthew Dale separate and they place their young son, Matthew Jr., in a London boarding school. The boy grows up without knowing his parents, and is taunted by his schoolmates, who doubt the legitimacy of his childhood. By the time he is 20, Matt wants to find out about his parentage, so he travels to Paris, leaving behind his sweetheart, Margo.
Impersonating Little Eva in a third-rate travelling production of Uncle Tom's Cabin fails to earn Nora enough for a square daily meal, and to make thing worse, her stage career comes to a sudden end when the sheriff arrives with a writ of seizure. Nora hops a passing freight but is frightened by a tramp, jumps off, and literally rolls into the town of Wattelville. After being arrested as a suspicious character, Nora is adopted by the kindly Ma Forbes, whose son James works in the local bank. "Pug" Hennessy and "Soup" McCool, two crooks, inveigle the scrupulously honest James into a poker game and, as a result, he is forced to steal $300 from the bank to cover his losses. Impersonating expert safe-cracker Velvet Mary, Nora helps the crooks to break into the bank, but upon opening the safe, she sounds the alarm, and the crooks are arrested. Having learned his lesson, James proposes to Nora, who never again is forced to go hungry.
Romantic complications and tragedy ensue when two former lovers, one of them now married to another, meet again.
In a Western mining town, millionaire Gordon Appleby meets Maida Madison, a civil engineer, and proposes. The two marry and return to Philadelphia, where they are coldly received by Gordon's snobbish family. Gordon's elder brother Mortimer's highbrow sensibilities are particularly offended by Maida's breezy manner, and he determines to break up the marriage.
Count Ferdinand, a submarine commander and secret pacifist refuses to torpedo a defenseless passenger ship during wartime. His submarine is sunk in the following fracas. In the spirit world, Christ commends the captain, and returns to earth in the commander's body to promote His message of peace.
