The B&M Railroad is blocked in its goal of extending the line to the Pacific Ocean when Frank Sayer(
J. Gordon Russell), the crooked guardian of Bobbie Van Tyne (
Louise Lorraine,) refuses to let the railroad cross Bobbie's ranch land. Railroad detective "Whispering" Smith (
Al Ferguson)persuades Jack Venable (
Lane Chandler), son of the man who built the line's best train,"The Lightning Express", to give up his wild-party, playboy life to help him investigate the death of Bobbie's father. Using an alias, Jack goes to work for the railroad as a foreman. He and Bobbie fall in love, and she decides to support the railroad. But Sayer goes all out in his attempt to stop construction, so he can acquire the right-of-way, and puts the lives of Jack and Bobbie in constant danger.
—Les Adams <longhorn1939@suddenlink.net>