The first network TV series to expand the Yellowstone canon, Marshals, follows Kayce Dutton (Luke Grimes), a man who joins the US Marshals. The show stars Gil Birmingham, Mo Brings Plenty, and Brecken Merrill, who play Kayce's son, Tate Dutton. The first episode of the series focuses on the people of the Broken Rock reservation, the tainted water on their property and the mining company seeking access to the land. The series is set to air on CBS on Sundays and is also streaming the following day on Paramount Plus. Mo Brbring Plenty, a member of the Oglala Lakota Nation and served as the American Indian Affairs coordinator on Yellowstone, discussed the series with Zoom. He highlighted the importance of environmental challenges faced by his community and the struggles and reality of life on the reservation.