Two women and their children arrive in Clearmont in route to California. Mrs. Chambers is looking to reunite with her husband who has been off mining for gold, while Mrs. Larson is a recent widow whose husband died of a snake bite along the trail. The women are determined to press onward despite the onset of winter. So, Britt MacMasters, former US Marshal turned rancher, and his ranch-hand Rusty, offer to escort the party through hostile territory.