In 1935, dust storms are sweeping across the southern plains of the United States, including Oklahoma. Twelve-year-old Millie is worried about her family's survival. The Dust Bowl is getting worse, and they're running out of food and money. Despite the hardships, Pa doesn't want to abandon the farm, which has been in the family for generations. But when the worst "black blizzard" yet hits, they have no choice. The family decides to make the journey...