Charlie is in boot camp in the "awkward squad." Once in France he gets no letters from home. He finally gets a package containing limburger cheese which requires a gas mask and which he throws over into the German trench. He goes "over the top" and captures thirteen Germans ("I surrounded them"), then volunteers to wander through the German lines disguised as a tree trunk. With the help of a French girl he captures the Kaiser and the Crown Prince and is given a statue and victory parade in New York and then ... fellow soldiers wake him from his dream.

In an attempt at greater efficiency, the chef of a fancy oceanside restaurant and his assistant wreak havoc in the establishment. Adding to the complications is the arrival of a robber.

An animated depiction of the sinking of the Lusitania: In May 1915, the liner leaves the United States, headed for Liverpool with over 2000 passengers on board. As the ship nears its destination, she is struck and severely damaged by a torpedo from a German U-boat. Even as frantic efforts to evacuate the ship are underway, another torpedo strikes the ship, leading quickly to disaster.

Poor Charlie lives in a vacant lot. He tries to get a job but when he gets to the head of the employment line the jobs are gone. Back "home" he rescues Scraps, a bitch being attacked by other strays. Together they manage to steal some sausages from a lunch wagon. They enter a dance hall where Edna is a singer and unwilling companion to the clientele. He is thrown out when he can't pay. Back "home" Scraps digs up a money-filled wallet buried by crooks. They return to the dance hall to find Edna fired. The wallet goes back and forth between Charlie and the crooks. Charlie, Edna and Scraps end up very happily.

Two peasant children, Mytyl and Tyltyl, are led by Berylune, a fairy, to search for the Blue Bird of Happiness. Berylune gives Tyltyl a cap with a diamond setting, and when Tyltyl turns the diamond, the children become aware of and conversant with the souls of a Dog and Cat, as well as of Fire, Water, Bread, Light, and other presumably inanimate things. The troupe thus sets off to find the elusive Blue Bird of Happiness.

Roscoe's wife wants him committed to the No Hope Sanitarium for a cure from drink. He is greeted by blood spattered, cleaver-wielding Buster and a barely clad female patient. He eats a thermometer and must be rushed into surgery.

A stranger comes to work at widow Halla's farm. Halla and the stranger fall in love, but when he is revealed as Eyvind, an escaped thief forced into crime by his family's starvation, they flee and become two of the many outlaws of Iceland's mountains.

The plot follows the novel more closely than does any other Tarzan movie. John and Alice Clayton take ship for Africa. Mutineers maroon them. After his parents die the newborn Tarzan is taken by a great Ape, Kala. Later the boy finds his father's knife and uses it to become King of Apes. Binns, the sailor who saved the Claytons and who has been held by Arab slavers for ten years, finds the young Tarzan and then heads for England to notify his kin. A scientist arrives to check out Binns' story. Tarzan, now a man, kills the native who killed Kala; when their chief is killed the black villagers appease Tarzan with gifts and prayers. The scientist's daughter Jane is carried off by a native, rescued by Tarzan (who has burnt the native village), aggressively loved by him ("Tarzan is a man, and men do not force the love of women"), and at last accepts him with open arms.