The Chisholms make their way across the plains and get attacked by Indians before they reach Ft. Laramie. Will and Gideon get out of jail and find a young Indian woman hiding in a house and bring her along with them.

Lester shows up at Ft. Laramie. Then Will and Gideon arrive. Will wants Lester hung for stealing his horse. Bonnie Sue reveals she is pregnant with Lester's child. The Chisholms start to make a home outside of the fort.

As the Chisholms move west, they notice a man is following them. Soon Lester disappears with Will's horse. Will and Gideon set off after Lester and the horse while the family continues on their westward journey.

The Chisholms learn that the Virginia land they have been working has been deeded away. They decide it is time to pull up stakes and take their wagon west to California. When they get to Louisville, they hire Lester Hackett as a guide.