Jim Marlow's brother, Chet, who has come west to manage the family mining properties, cheats Pete Daley out of his property. Pete enters Chet's office at night and robs the safe, being seen in the act by Tom Crowley. Pete hides the strongbox and sends a letter to his daughter, Marion, stating its location. Jim gets the letter and finds the strongbox, running afoul of Crowley, who shoots him. The sheriff arrests Jim for stealing the box, and Crowley attempts to take the box from the sheriff at gunpoint. The sheriff shoots Crowley, and Crowley, mortally wounded, tells the sheriff that Pete Daley was the man responsible for the original theft of the box. A lawyer who has been investigating Chet discovers that he has cheated Jim out of the substantial part of his rightful inheritance; Chet is sent to jail, and Jim settles down with Marion Daley.