The Ninety and Nine (1922)

Kate Van Dyck, society girl, is secretly engaged to Phil Bradbury. While he is in South America, she falls in love with Mark Leveridge. A mysterious murder in her home makes Phil appear guilty, and he escapes by climbing into a railroad engine and driving away with it. Some time later, after he has settled in the town of Marlow, where Ruth Blake is the attraction, Kate and Mark come upon the scene. Mark is led to suspect Phil, despite his new name, and frames him. Ruth is banished from town because she shields Phil, who is suspected now of robbery. He prepares to leave town. A forest fire starts and he saves the villagers by driving an engine to a train of box cars where they have taken refuge and bearing them from danger. Soon after word comes that he has been proved innocent of the murder. Ruth and he are reunited.