A prequel to 'Yellowstone,' this limited series follows the Dutton family generations before the ranch, as James and Margaret Dutton, played by Tim McGraw and Faith Hill, lead migrants in a wagon train across the punishing Great Plains toward Oregon. Sam Elliott's grizzled Pinkerton agent Shea Brennan takes charge of the journey after tragedy strips it of its original leader, hardening into the group's only real chance at survival. Isabel May's narration, as young Elsa Dutton, frames the trek with a coming-of-age wonder that never masks its brutality, while LaMonica Garrett's Thomas represents freedmen seeking a new life. Unflinching and gorgeously shot, it strips Western expansion down to its cost in blood.