Marshall-Green will star opposite Luke Grimes, who reprises his role as Kayce Dutton from “Yellowstone,” in the new series. The show follows Grimes’ Kayce as he joins an elite unit of U.S. Marshals, combining his skills as a cowboy and Navy SEAL to bring justice to his home state of Montana, per the official logline.

CBS is starting to build up the cast of its Yellowstone spinoff Y: Marshals.

CBS is expanding the Yellowstone universe with a new series, Y: Marshals. The upcoming drama will follow Kayce Dutton, played by Luke Grimes, as he moves on from his family’s legacy and ranch.