The Black family thrived after their rescue three years ago, but success has brought with it new, overwhelming issues. Marty returns to the Black Hills to help them battle the elements as they rebuild to protect against intensifying inclement weather.

When neighbors send a plea for help, the Raneys rush to rescue a lone Montana homesteader. With winter bearing down upon them, they must build a survival strategy from scratch to secure shelter, water and food before it's too late.