After an event rattles the state of Montana, nothing will ever be the same.
Jamie goes through with his plan, John lends support to an unexpected friend, the Yellowstone cowboys embark on a journey, and a flashback reveals the source of Rip's loyalty.
John deals with a herd problem, Senator Perry delivers news to Thomas Rainwater, Jamie and Sarah plan their next move, and Beth discusses a new business plan with the ranch in mind.
The Yellowstone enjoys an almost-perfect day branding cattle, Montana gets an unexpected visitor, Sarah sinks her teeth into Jamie, and Thomas Rainwater deals with a challenger from within.
John tells Clara to cancel his Capitol meetings so he can brand cattle with the Yellowstone cowboys, and Beth's disdain for a perceived rival reaches a boiling point.
John makes swift changes at the Capitol, the venom between Jamie and Beth reaches a boiling point, Rip updates John on his solution to the wolves, and the Yellowstone cowboys brand calves.
Beth heads to Salt Lake City to take care of unfinished business, a trap's set for Jamie, Kayce makes an important decision for his family, and Thomas Rainwater deals with mounting pressure.
Follow the violent world of the Dutton family, who controls the largest contiguous ranch in the United States. Led by their patriarch John Dutton, the family defends their property against constant attack by land developers, an Indian reservation, and America’s first National Park.