The heroic escapades of brave railroad special agent Eythe are detailed as he tries to solve the robbery of $100,000 in payroll receipts from a train. In the robbery an engineer was gunned down, and the dead man's daughter, Elliot, latches on to Eythe for support and romance. Eythe finds
that the crime was committed by first-time robbers Reeves and Valentine, who are brothers, and he brings them to justice. Supposedly based on an actual case.