It’s the 1930s and with Prohibition finally over, Americans are eager to drown themselves in booze. Ernest Gallo persuades his reluctant brother, Julio, to partner with him on starting a winery. Ernest employs every trick in the book to bolster sales, including conning customers, flouting laws and dodging government inspectors. He then gives his younger brother Joe, Jr. a menial job in the family business, but mistreats him badly. And when Joe, Jr. comes of age, Ernest and Julio terminate their guardianship of him in a secretive manner that will haunt the family, and one day cast a terrible shadow over their empire.