Captain Nemo has built a fantastic submarine for his mission of revenge. He has traveled over 20,000 leagues in search of Charles Denver - a man who caused the death of Princess Daaker. Seeing what he had done, Denver took the daughter to his yacht and sailed away.

Vamp Anne Baxte marries for money but when her old suitor marries for love and is happy, she becomes insanely jealous. Determined to ruin his life, first she tempts the wife with a lounge lizard. This doesn't work, so she temps her former sweetheart by offering him her husband's business secrets. Unfortunately Ann's husband (George M. Adams) overhears the conversation and not only does he ruin the young man in the stock market, he also tosses Ann out of the house. The film ends bitterly for all concerned.

After being unfaithful to "The Stranger", who committed a murder on her account, Cherry Millard, known as "The Siren", leaves to work in a dance hall in the Western town of Nugget. When Burt Hall arrives in town to deliver a will to the heirs of Bruce McClade, he is captivated by Cherry, who learns of Burt's mission. Discovering that the will dictates that Dr. Langdon, a friend of the family, is to receive $25,000, Cherry decides to impersonate Langdon's daughter Rose and thus gain possession of the money. In the meantime, The Stranger, who has been freed from jail, returns, recognizes Cherry as The Siren and kills her. This frees Burt from her evil spell, and The Stranger, now insane, follows The Siren's spirit into the desert.

Fight promoter Nick Donati grooms a bellhop as a future champ, but has second thoughts when the 'kid' falls for his sister.

John is a timid student who works at the University Book Store. He is studying to be a botanist and has a secret crush on the lovely Julia. One day, one of his letters gets accidentally mailed and Julia receives it. When the letter says that he is a fraternity man and a big track star, Julia rushes right over to see him. But John is neither and Spike, Julia's boyfriend, is a track star at a nearby College. John does not want to enter the track meet so Julia tries to use psychology on him. That and a good wrestling hold makes John timidly agree to enter the race, but Spike still scares him.

Joe Grant is an inventor, fireman and baseball player in his small hometown. He gets an offer to play in a big team and hopes to get more money for his inventions. But Joe's invited to present his invention to a fire extinguisher company at the same time when he is supposed to play. Will he be able to show the effectiveness of his invention and win the game?

The friendship between two orphans endures even though they grow up on opposite sides of the law and fall in love with the same woman.

Inventor George Grant and his partner, financier John Benson, accept an offer of $200,000 for the rights to an invention. After Grant breaks up a fight in a bar between drunken Dave Wilson and an old man reprimanding him, Dave is told by his mother to apologize to Grant. He meets Benson, who witnessed the fight, outside Grant's apartment and tells him his purpose, but during Dave's conversation with Grant, Grant suddenly drops dead. The police find Dave hiding, and after a pistol is found outside and Benson tells them about the fight but says he knew nothing about Dave's apology, Dave is convicted of murder and electrocuted.

Soon after Pauline D'Arcy, an untutored country girl from the Northwest, is left destitute by the death of her father, she falls in love with a middle-aged married man, John Adams, whose alias is Abbott. Although never intending to marry her, Abbott promises to send Pauline to college. During her studies, she falls in love with her lover's son Richard, while at the same time establishing a literary career. She anonymously publishes a novel based on her experiences and it becomes a best seller.

Owen, a small time bookie, decides to open an insurance business as it involves lesser risk. His first client is Colonel Youngblood who insures his daughter, Marilyn, against marriage.