Le ranch du Yellowstone derrière lui, Kayce Dutton rejoint une unité des U.S. Marhals. Cowboy et ancien Navy SEAL, il apporte la justice dans le Montana. Lui et ses coéquipiers sont le dernier rempart de la région dans la guerre contre la violence.

In the final season, Jason Hayes struggles to balance his warrior’s existence with the responsibilities of single fatherhood. Ray Perry, his trusted second in command, questions whether he will be able to leave the battlefield behind as his retirement nears. Dedicated door-kicker Sonny Quinn battles against changing tides as Jason and Ray’s shifting focus means that other teammates must shoulder more responsibility. Both Omar Hamza and Drew Franklin find diving into work an effective way to distance themselves from their past traumas. Vital to mission success is Lieutenant Lisa Davis, a no-nonsense officer who ushers the team into a new era of warfare against powerful rivals for supremacy on the world stage. Ripped away from their loved ones at a moment’s notice to be deployed across the globe, Bravo team remains dedicated to their duties. Even in the face of overwhelming odds, they know this is the price to keep the families they left behind safe.