Earthquakes in central Korea turn out to be the work of Yongary, a prehistoric gasoline-eating reptile that soon goes on a rampage through Seoul.
American agent Captain Dieppe gets involved in the affairs of lonely Count Fieramondi in Northern Italy. Dieppe, hired to help the count reconcile with his wife who has gone to Rome to pay off gambling debts mistakenly falls in love with her cousin, Lucia, who is impersonating her. After Dieppe retrieves evidence of the debts and the real identities are revealed, he makes a final sacrifice to ensure the count and countess can reunite.
Joan Doubleday is a shy spinster, who has been engaged to Monty Wade for 12 years, is secretly adored by Peter Flagg. Her young niece, Jerry, arrives and sets out to capture Monty. On the wedding day, Jerry announces that the grooms have exchanged places and that Peter will marry Joan. A quarrel prevents preparations for the wedding, but Jerry finally convinces Joan that she was meant for Peter.
"Basher Bill," a retired prizefighter turned criminal, pretends to reform by joining a Salvation Army shelter in London run by a pious wraith named Elizabeth. Attracted to Elizabeth (although he is engaged to a street girl named Annie), Bill confesses to a bank robbery, has a spiritual revelation, and decides to go straight. His cast-off sweetheart reports him to the police; then, contrite, she warns Bill of the impending danger. Bill is captured immediately, but he escapes and sacrifices his life to save Elizabeth and the Salvation Army nursery when the rest of the gang use them as a human barricade against the police.
Toyama wants to go to college in America but his alcoholic father won't supply the funds. He gets the money to go, however, from Sada, whom he has married in secret. But Sada has a secret of her own -- she told Toyama that she got the money from a relative, but the truth is that she has signed up to do a four-year stint as a Geisha girl.
Auto racer Speed Carr enters a marathon race across the United States, from New York to Los Angeles. He encounters numerous obstacles not related to the race and must switch identities and vehicles before he can finish.
Two schoolteachers, married for love, are parted by the husband's obsessive desire for wealth and social position.
A murderer strikes at a secret gathering of top law enforcement agents, brought together by a millionaire seeking their endorsement of his candidate for governor.
"The Mystery of the Black Domino" was the first film directed in Brazil by a woman, the pioneer Cleo de Verberena. Marcos and Virgílio are medical students and share the same room. At the end of the first night of carnaval, Marcos finds the corpse of a woman, dressed as a black domino, inside the closet and accuses Virgílio of murder. Virgílio defends himself by saying that that was Cleo, wife of Commander Fernando Almeida, and that he found her in the corso asking for help, but Marcos questions Virgílio about the veracity of the story. Lost Film.
Chuck McCarthy, an intrepid young ironworker, longs to become an actor, despite the protests of his girl, Molly O'Connors, and his family. In dashing up the frame of a building to catch actress Bijou Lamour's runaway pet monkey, he attracts the attention of the studio managers, who make him a stuntman. For a time Charles is happy executing life-risking feats and strutting around in new clothes, although the company laughs at him behind his back. When leading man Marmaduke X. Caruthers refuses to perform a particularly dangerous stunt in a war film, Chuck doubles for him and is seriously injured. The studio manager, who recognizes in the incident an opportunity to promote his star, quickly wraps Marmaduke in bandages and sends him to the hospital, while Chuck is secretly removed through the back door. The next day, the Filmcraft Company sends Chuck a check for $1,000 to keep quiet about the accident. He and Molly use the money on their honeymoon to Niagara Falls.
When Gilbert Warren discovers his law partner Arthur Fenton making crooked deals, he severs their relationship and opens an office of his own. Louise Talcott, daughter of Colonel Talcott, is loved by both. She favors Warren. Out of jealousy, when Warren leaves town, Fenton schemes to blacken his name. Warren is appointed to vet the street railway franchise. When Fenton hears of this, he reports to Colonel Talcott and the Mayor that Warren is a grafter. The Colonel floats a deal to test Warren and finds him honest. Later, the Colonel and the Mayor apologize to Warren as he embraces Louise.
Estranged after an argument, music teacher Johann Wagner and fencing master Henri Dupin attempt to separate their engaged children, Karl and Elsie. Seeking new quarters, they come to the same boarding house unbeknownst to each other. Thus reunited, Karl and Elsie determine to marry. Following the advice of their landlady Mrs. Flannigan they elope and are wed. The two old fathers remain at odds with each other and the couple until one day Mrs. Flannigan comes with the good news, a child has been born to the young house of Wagner. All is forgiven and reunited Grandfather Wagner and Grandfather Dupin leave arm in arm for the clerk's office to become US citizens.
Detective Martin Gale, tough with criminals but awkward with women, secretly loves Dorothy Baird, a clever operative at the agency he manages. He gives her a small revolver engraved with his name as a token. Dorothy is assigned to cover a party for a society debutante, where she meets James Vallon, a popular and wealthy young man, and they are attracted to each other. While he flirts with her a valuable necklace goes missing and as Dorothy digs deeper into the incident she begins to suspect Vallon is involved.
A young woman who agrees to a sham wedding with Lord Riginald Belsize because his inheritance prohibits him from marrying his girlfriend who is an actress. Belsize is convinced if he marries someone else and hires that woman to be his "wife" he can hide his relationship with his girlfriend.
Jack Trevor, an automobile salesman who takes the place of the recently deceased heir, Horace Barney, after a train crash. Trevor, who has a striking resemblance to Barney, finds himself at the mansion where he falls in love with Barney's cousin and rightful heiress, Helen. He must then expose the fraudulent scheme of Barney's guardian and his accomplices to save the estate and win Helen's love.
Joe Smith Jr., the son of a millionaire, is challenged by his father to earn his own living instead of depending on his father's money. One year later Joe is broke, dirty, homeless and hanging out with other derelicts on a New York City park bench. A chance meeting with businessman Ned Stervens results in Joe being invited to stay in Stevens' house for a week, to make Stevens' point to his acquaintance Frank Overton---a shady stockbroker--that given a chance, even a tramp like Joe can better himself. Joe finds himself in love with Stevens' sister Lucy and unwittingly becomes party to a scheme by Overton to swindle Lucy out of her money.
Tex Benton (cowboy star Tom Mix) wants to marry Janet McWhorter (Kathleen O'Connor), but her father (Charles K. French) will give his blessings only if Tex works on his sheep ranch. Tex, a cattleman through and through, refuses and gets his aggressions out by stirring things up at the local saloon.
In the mountains of West Virginia, Alderson Cree is mortally wounded in an ambush by Kip Ryerson, after Kip's wife, Martha, seeks refuge at the Crees's home for herself and her stepdaughter, Eileen. Cree makes his young son, David, promise to avenge his death once he has grown into manhood. As David Cree runs for help, Alderson recants and instructs Martha Ryerson to release his son from his promise. However, to eliminate her brutal spouse, Martha Ryerson remains silent, and George Hedrick, the local storekeeper, leads a crowd to drive Kip out of town. Hedrick later announces Kip's death, relieving David of his obligation to his father. Years pass, and David, now an adult, is engaged to Mary Reddin. When Kip Ryerson returns to town, David's mother demands that he keep his promise to avenge his father.
Henry Potter is the irresponsible playboy son of a New York millionaire. Fearing he will disgrace the family name if he stays in New York, the father sends him to San Francisco to work in the family shipyards and, to make a man out of him, he is told he will have to start at the bottom and work his way up. Henry decides this is not a good idea and resents it to the point he will indeed start at the bottom but will work his way down from there, and disgrace the family name in San Francisco.
During the Civil War, Rachel Hayne, a young widow, is among those "held by the enemy" when her old family home is within the lines occupied by the Northern troops. Protected by Colonel Prescott from looters and the unwelcome attentions of Surgeon Fielding, Rachel begins to fall in love with the gallant Yankee officer. Their romance is disrupted when Rachel's husband Gordon, long reported dead, is captured as a spy and condemned to death.