Sold into prostitution, Sara Fuller robs a client and flees to her brother in White Pines, Montana. Anxiously awaiting his mail order bride, rancher Caleb Young is delighted when a beautiful woman steps off the stagecoach. A series of misassumptions soon finds the two taking their marriage vows. When Sara discovers she isn't Caleb's intended bride, she hides her scandalous past and sets out to prove she can be a good wife. Caleb adores Sara but suspects her of hiding something very important. Despite Sara's secrets, their love grows and a child is conceived. When Caleb's real bride arrives, their troubles begin, only to be compounded by the appearance of the man Sara robbed. Now the two lovers must discover whether their love is strong eugh to survive the forces threatening to tear them apart.