In 1960s Chicago, a young woman stands in the middle of a musical and social revolution. Leeba Groski doesn't exactly fit in, but her love of music is not lost on her childhood friend and neighbor, Leonard Chess, who offers her a job at his new record company in Chicago. What starts as answering phones and filing becomes more than Leeba ever dreamed of, as she comes into her own as a songwriter and crosses paths with legendary performers like Chuck Berry and Etta James.