When a smallpox outbreak kills her first child, Jennie Duncan attempts to escape the excruciating pain and disappointment of the loss by persuading her husband, Perry, to pack up their family and head west toward Wyoming Territory.

Strong-willed, beautiful, and very tough, Jennie has her gentle, mild-mannered husband wrapped around her finger. He finally agrees-despite the certain hardships waiting on the wagon trail.

Jennie and Perry pack up their three small children and set out through hostile tribal territory. As they travel over harsh geographical terrain and through...