Oklahoma, 1930s. The Bellum family house rests in a valley of dirt as clouds of dust blot out the sun. Margaret (Sarah Paulson, “American Horror Story,” “Run”) and her two daughters, Rose (Amiah Miller, “Henry Danger,” “War for the Planet of the Apes”) and Ollie (Alona Jane Robbins), tend to their sparse farm while Margaret’s husband has left in pursuit of work. As they struggle to survive the punishing Dust Bowl environment, a mysterious stranger (Ebon Moss-Bachrach, “The Bear,” “Andor”) arrives, threatening all they know and love. But is the threat a closer one?