The Fourth Commandment

Jack Donovan, a pitcher for the Chicago Cubs, refuses to throw a game for gambler Mike Moran. Moran retaliates by breaking up Donovan's family. Believing that his wife and son died in the sinking of an ocean liner, Donovan stays in baseball and, 20 years later, becomes manager of the New York Giants. What he doesn't know is that his family isn't dead and his son, Jack Jr., is now grown and looking for revenge against his father for what he believes was his abandonment of them.

Johnnie Gains, son of a farming couple, is industrious and imbued with a spirit of sacrifice. Rejected for military service because of an eye injury, he enlists in the Salvation Army.

Veteran postman Bob Morley and his son Johnnie are honored for their service to the U. S. Mail Service. When Johnnie takes a position on the Enterprise, he is falsely convicted of theft and murder when the cargo is stolen and the ship's officer is shot.

Because Dan McDowell is unable to operate the new mechanized fire equipment, he is retired with a small pension; his son, Johnny, quits school to work in the fire department; and his old horse, Bullet, is sold to a dirt-hauler. Dan is charged with stealing Bullet and is jailed, but he is cleared in time to give valuable aid in a fire that traps Johnny's sweetheart, June Rutherford.

Jack Holmes, a squatter, and his daughter, Margaret, settle on land owned by Harry Rawlins. Broncho Billy, gunman, is engaged by Rawlins to eject the squatter or put him out of the way. Broncho is wounded by a half-breed and Margaret nurses him back to health. The gunman then refuses to turn Holmes out.

In ancient Egypt, Queen Neco Tokris angers the high priest by falling in love with a minor cleric. The high priest arranges for his rival to be stoned to death, and the queen, rather than submit, allows herself to be buried alive with her lover's body. Many centuries later, a ship steams toward Cairo, Egypt. Among its passengers are wealthy playboy Reginald Stanhope; vaudeville dancer Celia Thaxter and her manager, Gregory Gallup, who together are maneuvering Reginald into marrying her. Also aboard are Herbert Boone, a shell-shocked drug addict, and his nagging wife, Adele; Kelim Pasha, an Egyptian prince who attracts Adele Boone's affections; and Mahmud, an Egyptian mystic who insists that Celia Thaxter and Herbert Boone are the reincarnations of an ancient Egyptian queen and a priest who sacrificed themselves for their love.

Jim Kane, a gambler, prevails upon Grace Carew to marry him. Grace is undecided whom she loves the best, John Hunter, a ranchman, or Kane, but finally decides to marry Kane. Some time later, we see Kane abusing his wife, neglecting her and always in a state of intoxication. Hunter has always been a friend of the family and it was nothing unusual to see him in their home, but Kane, entering the house one evening under the influence of liquor, misinterprets the meaning of Hunter's presence there, and upbraids his wife, slapping her in the face. Hunter is furious, but controls himself.

Georgia Garrett is sent by jealous wife Elvira Kent on an ocean cruise to masquerade as herself while she secretly stays home to catch her husband cheating. Meanwhile equally suspicious husband Michael Kent has sent a private eye on the same cruise to catch his wife cheating. Love and confusion ensues along with plenty of musical numbers.

A twenty-year veteran of the printing room of The San Francisco Chronicle is passed up for a promotion at the same time his son is accused of graft and involved in scandal. The historical landmarks of old San Francisco are present: The Pacific Telephone and Telegraph Building, City Hall and the Pickwick Hotel-- but they don't distract from the dramatic and emotional perforamces at the film's center.

A young girl, stifling on her father's backwoods farm, is reinvigorated by the arrival of an army regiment, come to train in the area.

Gubernatorial candidate Walter Croyden is in love with Beatrice, but he acts obnoxiously when he drinks, so she flees to Europe to re-evaluate the relationship.

An actress falls in love with a shepherd, to the dismay of a wealthy suitor.

Giulia, a Neapolitan girl, much against her will, becomes the mistress of a wealthy gangster. Her "protector" is stabbed to death by Giulia's hot-headed musician lover Tony (Francis McDonald), whereupon the heroine takes refuge in the villa of French playwright La Farge. Under La Farge's careful tutelage, Giulia develops into a famous actress, capturing the heart of the Duke De Chaumont. Though LaFarge himself has fallen in love with the girl, he does not stand in her way when she accepts the Duke's proposal. But Giulia has not reckoned with Tony, who is still crazy about her and still willing to kill any man who stands in his way. Tony murders LaFarge, then sets his sights on the Duke, intending to kill the poor fellow during the wedding ceremony. Hoping to save the Duke's life, Giulia pretends to have fallen out of love with him and returns to Tony.

Against the wishes of Doctor Neighbor, the guardian who also loves her, Hazel, who is due to inherit a fortune when she turns 21, marries district attorney Hamilton Rogers, a man more devoted to Hazel's future bank account than to her.

Southerner Pearson Hunter (Jack Holt) marries Shirley, a Northerner (Dorothy Dalton), and brings her down to his home. There, she finds an acquaintance, Alexander Chapman (Robert McKim), and the fact that she knows him rouses her new husband's jealousy. This is fanned even further when Pearson's younger brother, Morgan (Emory Johnson) returns from college. His fiancee, Margery (Doris Lee), believes there is something going on between Shirley and Morgan and complains to Pearson.

In Mexico, a poor Yaqui Indian loses his family through the actions of a racist Mexican officer named Martinez.