Si and Elmer and the Sheriff have rounded up the gang of Mexican desperadoes and exposed the trick of the ghost train. A phonograph with a record of the train running was found to the source of the real sounding train that terrorized a whole railroad division and aided in the kidnapping of six men. The Sheriff is now ready to take his prisoners to town, and Si has taken Pat, the Irish section boss, back to the railroad track to collect Elmer who was left to guard the phonograph. However, there is more trouble...