Mary Doone (Theda Bara) is a poor British girl who runs away from her adopted family because the father made a pass at her. She lives at a parish house, and at the outbreak of World War I, she becomes a Red Cross nurse.

Unscrupulous stockbroker George Howard convinces Robert Sterling that he is having an affair with Robert’s wife Helen aided by Robert’s former flame, Rita Lawson who wants him for herself. Though Robert believes the lie, divorcing Helen and gaining custody of their child, Helen still wants nothing to do with George. Mad with desire he kidnaps her daughter and demands Helen sleep with him for the girl’s safe return. Forced into a corner, Helen agrees but once her daughter is rescued a struggle ensues with George and he is shot dead. Helen, cleared of wrongdoing reunites with Robert who has realized his folly.

Jack Calvert bets four friends that he can travel from New York to Constantinople without a cent.