The Great War changed everything for Lady Harriet Cunningham. Instead of being presented at eighteen, she trained to be a nurse and shared forbidden kisses with her colleagues. But now in 1923, at the age of 24, Harriet is facing spinsterhood. It's not such a ghastly prospect to her, but as the daughter of the Earl of Creoch, there's a certain expectation that she must meet. So, in a last attempt to find a match for their daughter to see her safe and secure, they send her to her aunt and uncle in New York. Only when she gets there, she and her cousin, a man who, like her, suffers from the weight of expectation from his father, decide on one last hoorah as a memory to hold close to their heart in their later life. But when they arrive at the speakeasy hidden beneath a small bookstore, Harriet finds herself entranced by the singer. No matter how hard she wants to please her family and do her duty, she finds that there's something about the woman that she can't stay away from — that she can't ignore her heart. Which is loudly calling for Miss Rosalie Smith.