Billy Martin is sent to New York to put through a war contract for his father, a new England manufacturer, and takes $100,000 as a security. The munition broker's secretary, a crook, tells Graham, a gambling house keeper, of Billy's coming. Miller is detailed to lure him to the gambling house.

Long before he was the subject of a Walt Disney TV miniseries, Revolutionary-era guerilla leader Francis Marion, aka the Swamp Fox, was the "star" of this three-reel Kalem costume drama. The first part of the film ends as Marion and his followers capture English general Gates right from under the noses of the "Redcoats." The closing scenes find Marion and company emerging victorious from a battle between the British and the Colonials at the DeMotte farm.

John Holden discovers a burglar in his house and shoots at the escaping thief. Warding, a detective, and the officer on the beat hear the shot and hurry to the scene. The detective finds a large diamond set on the library rug and concludes it has been lost from the thief's ring.

Steve Carnes, the son of a wealthy manufacturer, leads a useless life and is disowned by his father. After a night of gambling he returns, penniless, to his apartment. He is on the point of ending everything when his bell rings and he finds an abandoned baby on his doorstep. Steve and his valet, Hodges, attempt to pacify the child. The distracted mother, who has hoped to place the little one in a comfortable home, repents her act and comes to Steve's house, begging that the child be returned. Steve complies with her request and secretly follows her home. He sees that she lives in a disreputable tenement and finds a note from her husband's father, in which the latter states that the marriage was against his wishes and that the young woman has no claim upon him.

The "Treasure Ship" is not a real ship, but a model constructed by Captain Bascom during ten years of enforced solitude on a South Sea island after the wreck of the "Golden Cloud." The treasure consists of a bag of gems found under the skeleton of an earlier castaway. When rescue finally comes, Bascom stows the treasure in the hold of his model and so carries it safely to his home, where he has long been mourned as dead.

Hampton, a broker, employs a detective to investigate Stella, a show girl, with whom his younger brother Dick is in love. As a result of the detective's discoveries, Dick breaks his engagement with Stella. The woman calls at Dick's office late that afternoon. Hampton leaves the two alone. Unable to alter Dick's decision, Stella seizes a knife and threatens suicide. Dick tries to wrest the weapon from her and is accidentally killed.

To save her parents from the poorhouse, Florence promises to wed Henderson, her elderly employer, although she loves Roy Harris. This results in a violent quarrel between the two men.

Mary's lot. always hard, becomes doubly so upon her father's death. Desiring to re-marry, the girl's stepmother conspires to get her out of the way.

"The Devil's Dansant" is the nickname given to a dansant of which Dominique, a Frenchman, is the proprietor. District Attorney Farrar, while searching for evidence on which to raid the place, is astounded to find that his wife Valerie, is a frequent visitor at Dominique's. The willful woman disobeys her husband's orders and continues to visit Dominique's.

Unable to purchase the formula of the explosive about to be sold to the government by Mallott, the representative of a foreign power orders Le Farge and Gabrielle to obtain it. Gabrielle, posing as Le Farge's sister, easily fascinates Fanshell, Mallott's secretary. The adventuress also meets David, a fisherman, and engages him in a violent flirtation.