Whispering Smith, a railroad detective, is sent to Medicine Bend to suppress the looting of cars. Smith meets two childhood friends, Murray Sinclair and his wife, Marion. Smith's arrival kindles an old spark of love in Marion's bosom. Sinclair is discharged for looting wrecked cars and Marion leaves her husband when he threatens to ruin the road if he is not put back to work. After trying for weeks to get an interview with Bucks, general manager of the railroad, Murray Sinclair and his followers, Du Sang and Karg, are granted an audience. They state their side of the case. Bucks refuses to put them back to work. He says that McCloud was right in discharging them. Sinclair becomes violent and tries to attack McCloud but is prevented by Whispering Smith. During the scuffle, Du Sang manages to secure a wire that has just been delivered to McCloud. The wire reads: "Notify Dunning Cattle Co. shipment of $65,000 delayed till No. 10 Friday." They decide to hold up the train, get the money, ...