On the day of their marriage, Ruth discovers that her sweetheart, Jasper King, is the proprietor of a gambling establishment. Denouncing the man, Ruth declares that she will not become Jasper's wife until he has given all his ill-gotten wealth to charity. Jasper obeys Ruth's demands. At the same time, Ruth's brother, Byron, deserts Julia, whom he secretly married, because of his fear lest his father disinherit him for marrying beneath his station. The girl's plight comes to the attention of a mission worker. Later, Byron steals money from his father and attempts, by gambling, to win enough money to settle his debts. Jasper, who has witnessed the theft, comes to the boy's rescue when Byron loses the stolen money. Ruth learns of her sweetheart's visit to the gambling house and is heartbroken. Through a chain of circumstances, Jasper is arrested on the charge of attempting to burglarize the Mason home. At the same time, the mission worker brings Julia to Byron's father, who is won over by the girl's beauty. Byron learns of his benefactor's plight. His manhood awakened, the boy clears Jasper by confessing his own guilt. Ruth thus learns the circumstances surrounding her sweetheart's visit to the gambling house and forgives him.