Erin McKenna, a beautiful songwriter married to a crooked Los Angeles County sheriff 's deputy, is kidnapped by Benjamin Armenta, the ruthless leader of the powerful Gulf Cartel. But his demands turn out to be as unusual as the crumbling castle in which Erin is kept. She is ordered to compose a unique narcocoriddo, a modern-day folk ballad of the kind that have recorded the exploits of the drug dealers, gunrunners, and outlaws who have highlighted...