Her duty is to keep smiling through… When World War II breaks out, Suzanne's dream of attending the Royal Academy of Music crumbles. Determined to do her bit, she joins a swing band that entertains troops in some of the worst-hit cities of Europe. Through singing, Suzanne finds a confidence she never knew she had, and she soon wins the admiration of Britain's brave servicemen. But her heart already belongs to a Navy officer who is serving out at sea. The question is… will they meet again?