The film takes place around 1860 in the Rocky Mountain region. Tom Hardy (Tom Mix), a pony express rider, is carrying government gold in a coach to Wassatch accompanied by Alice Calhoun (Sharon Lynn) , the daughter of the US telegraph survey station. The gold is to pay for the US Telegraph Survey and it is to be delivered to the survey chief, Jim Calhoun (Thomas Lingham). The coach is attacked by bandits led by the Slade (Duke Lee) and Kane (Mark Hamilton). Tom escapes from the bandits (Wynn Mace, Lee Shumway, Joey Ray), but the stagecoach keeps moving with Alice inside and Tom rescues her just as the coach topples over the mountain. Kane is in Wassatch when Tom and Alice arrive on horseback and he makes advances to Alice which Tom resents. Calhoun the survey chief meets with Tom to get a report on the robbery attempt and Kane overhears the report and plans to steal the gold. Kane abducts Alice and rides away with her to his stronghold cave and then he and his bandits captures Tom and brings him also to the cave. The US troops come to the rescue and capture Kane, Slade, and the other bandits. Alice falls into Tom's arms at the epilogue of the film.
—Dana Cocke' (Mark Hamilton's Grandson)