In the middle of a pictorial lecture on his recent expedition to the Mongolian Desert, Dr. John Benton,the famous explorer, drinks from the water bottle on his lecture table, collapses and dies. His last words "Eternal Fire" are the only clue Chinese detective Jimmy Wong and Captain Street of the police department have to work on.
Shipping magnate Cyrus Wentworth, downcast over a disaster to his ocean liner 'Wentworth Castle' (carrying, oddly enough, an illicit shipment of Chinese bonds) is shot in his office at the very moment of kicking out his daughter's fiance Dick Fleming. Of course, Captain Street arrests Dick, but reporter Bobbie Logan, the attractive thorn in Street's side, is so convinced he's wrong that she enlists the help of detective James Lee Wong to find the real killer.
After World War I, Armistice Lloyd Hart goes back to practice law, former saloon keeper George Hally turns to bootlegging, and out-of-work Eddie Bartlett becomes a cab driver. Eddie builds a fleet of cabs through delivery of bootleg liquor and hires Lloyd as his lawyer. George becomes Eddie's partner and the rackets flourish until love and rivalry interfere.
Johnny Fraser leaves his mother in their small home town and sets out for the big city. He obtains a job with a large firm of architects. Steve Carson, a fellow employee, is constantly flaunting the money he has won at the race track. Johnny also bets the races, but loses heavily and takes some of the firm's money to cover his losses.
Hardworking Minnie (Cora Green) marries "Dollar" Bill (Bud Harris) a shady gambler after her money and her attractive daughter, Sue (Izanetta Wilcois). Sue meanwhile, is in love with Bob (Carl Hough), an idealist fond of looking out over the skyline and saying "Harlem... there's so much to be done here--it's fairly screaming for leadership." When Bob decides to organize the community against local racketeers he little realizes would-be father-in-law Dollar Bill is one of them. Bill meanwhile has problems of his own: A vicious white mob from lower Manhattan is muscling in on his action, and bullets are about to fly.
In coastal Cornwall, England, during the early 19th Century, a young woman who's come there to visit her aunt, discovers that she's married an innkeeper who's a member of a gang of criminals who arrange shipwrecking and murder for profit.
A tough street kid takes the rap for a burglary committed by the son of his foster family and is sent to a boys reformatory, where the inmates are under the thumb of corrupt guards and a brutal prison doctor.
Jimmy, an idealistic and hard-working young man, has just arrived in New York City with dreams of making his fortune. Along the way he faces numerous obstacles, opportunities and temptations, but through it all, he considers the actions of his hero, Abraham Lincoln, for guidance. Will Jimmy see his dreams come true, or will he be another of the countless hopefuls chewed up and spit out by New York's mean streets?
While participating in a contest at a local newspaper in which school children are asked to submit a news story, local attorney Carson Drew's daughter Nancy intercepts a real story assignment. She "covers" the inquest of the death of a woman who was poisoned. Nancy doesn't think the young woman accused of the crime is guilty and corrals her neighbor Ted into searching for a vital piece of evidence and stumbles onto the identity of the real killer.
When shifty cattlemen Belknap (Walter Miller) and H.R. Shelby (Gordon Hart) are caught shipping infected animals to Mexico, they frame inspector Gene Autry. Now Autry and his sidekick, Frog Millhouse (Smiley Burnette), must catch the bad guys in the act and set things straight. June Storey co-stars as rancher Martha Wheeler. Autry sings "I'm Gonna Round Up My Blues," "Moonlight on the Ranch House" and "Big Bull Frog."
Henry Jackson, known as Little Dynamite, is a Golden Gloves champion, who agrees to turn professional when approached by fight manager Ed Watson, despite the opposition raised by his father and Fanny Singleton, his sweetheart.
A just-married young woman attempts suicide after her husband tells her he really doesn't love her because he has become involved in an extortion racket, then finds herself becoming involved with the doctor who has saved her life and become attracted to her.