A teenage boy walks past a cornfield. Shouting men at the Chicago Board of Trade. The boy back on the farm with a herd of cows. A man unloads a dairy truck. An animated map of the United States. A line is traced around the Midwestern region. A narrator's voice comes in and talks about farming, transportation, industry, and marketing in Wisconsin, Illinois, Indiana, Michigan, and Ohio. The teen boy feeds cows. He talks about helping out on the farm and what he wants to do after high school. His uncle prepares a cow for milking. We follow the milk from the tube to the vat.