Rebellious society girl Arabella Raynsford is leading a double life as a music hall singer but to escape a possible scandal, she flees to Constantinople to join Florence Nightingale. Arabella's ambitious mother wants her to marry wealthy Irish landowner Oswald Delaney but she has fallen in love with humble engineer Nat Sloane, a man her parents will never accept as a suitable husband. Besides, marriage will mean having to give up singing. Will she be able to find her path to happiness?