Rainey Bird, Ivy Sparrow and Bea Herron all love to sing. For Rainey, music has been a solace during the upheaval of starting a new life with her mother, away from her abusive dad. Bea finds a confidence when she sings that she cannot get from anything else. Ivy sees it as her best chance of making a life away from Gosport and a dead-end job. The three of them sing in a choir run by the strict but kind Mrs Wilkes. When war breaks out, though, dreams must be put on hold. That is, until a mysterious stranger arrives with a proposition that just might change their lives...