The summer of 1927 might be the height of the Roaring Twenties, but Bonnelyn Parker is more likely to belt out a church hymn than sling drinks at an illicit juice joint. She's a sharp girl with plans to overcome her family's poverty, provide for herself, and maybe someday marry her boyfriend, Roy Thornton. But when Roy springs a proposal on her and financial woes jeopardise her ambitions, Bonnelyn finds salvation in an unlikely place: Dallas's newest speakeasy, Doc's.

Living the life of a moll at night, Bonnie remains a wholesome girl by day, engaged to Roy, attending school and working toward a steady future. When Roy discovers her secret life, and embraces it - perhaps too much, especially when it comes to booze and gambling - Bonnie tries to make the pieces fit. Maybe she can have it all: the American Dream, the husband, and the intoxicating allure of jazz music. What she doesn't know is that her life - like her country - is headed for a crash.

She's about to meet Clyde Barrow.