O'Brien is "Whispering" Smith, so named because he speaks softly but knows how to fend for himself. The son of a railroad president, Smith is determined to learn the business from the ground up, so he gets a job as a track walker for his dad's rail line. While going about his duties, he meets Nan Roberts (Irene Ware), who is about to sell her Colorado ranch. Smith finds out that there are valuable tungsten deposits on her land and makes certain she won't be cheated by the villains
George O’Brien
Irene Ware
Kenneth Thomson
Maude Allen
Spencer Charters
Victor Potel
Edward Keane
Frank Sheridan
William V. Mong
Maurice Cass
Allan Cavan
Bess Flowers
John Ince
Si Jenks
J.P. McGowan
Dick Rush