The Dutton family embarks on a journey west through the last bastion of untamed America. James arrives in Texas, where he and his family prepare to make their way through The Great Plains in search of a new home and the promise of opportunity.

Thomas and Shea recruit James and some local cowboys to corral a herd of cattle. As they begin their journey, the caravan is confronted with some of the many dangers they will face along the way.

The group faces the harrowing task of crossing the river with their wagons and supplies. Thomas and Noemi grow closer.

Shea helps Elsa cope with her loss. The group crosses another river and prepares to enter Indian territory. Thomas buys Noemi a gift.

A misunderstanding leads to a battle with serious consequences.

James and Margaret face a heavy decision. Shea and Thomas take bold action to help one of their own.