When Kayce and Tate cross paths with an old friend of Tate's from the rez, Hayley, who exhibits behavior consistent with a trafficking victim, Kayce throws himself into tracking her down rather than committing to commemorating Monica.
With the Yellowstone Ranch behind him, Kayce Dutton joins an elite unit of U.S. Marshals, combining his skills as a cowboy and Navy SEAL to bring range justice to Montana, where he and his teammates must balance family, duty and the high psychological cost that comes with serving as the last line of defense in the region's war on violence.