Lucas agrees to take a job as a federal undercover agent and goes to Wyoming to investigate rumors of sales of arms to renegade indians. His life is endagered by the town drunk who stumbles onto his true identity and purpose. (Part 1 of 2)
When an outlaw leader lures Marshal Torrance out of town, Lucas is the only one who can stop him from lynching a local man who killed one of the members of his gang.
When Mark finds gold on their property, a fast-talking salesman who tried to sell Lucas a new lightning rod offers instead to buy the ranch's mineral rights.