Morton Scott is a friendly chap earning a living as a salesman for the Smith & Wesson Firearms company. He is the guardian of his kid brother, Tommy.
Scott was making his way to the Wyoming territory as part of a combined wagon train and cattle drive. Unfortunately, the guide for the train got the fever and died, leaving Mort and the settlers lost. Luckily for them army scouts Cheyenne Bodie and Smitty crossed their path and offered to take them to Fort Laramie where they can hire another guide.
That evening, rustlers caused the settlers' herd to stampede. In the commotion, Mort saw his kid brother Tommy in danger and helped him into their wagon. In doing so, he got in the path of the stampeding cattle and was trampled to death.
Smitty wore Mort's clothes and used his samples to impersonate the late gun salesman in a scheme to retrieve the stolen cattle from the clutches of a gang in the nearby town of Julesburg.