Grant Allen is searching for his younger brother who was separated from him when their parents died many years ago. After receiving word that his brother went west to the Rockies, he joins a band of trappers, hoping they can lead him to his brother's location. Soon Grant realizes there's a woman hiding among the men, and he's determined to find out her identity, what she's hiding, and how he can keep her safe in this country of wild animals and even wilder men.