Mary Ann's greatest wish is to become an opera singer, and she's thrilled when the famous child prodigy Mozart comes to perform in Chelsea. But through a sudden twist of fate, Mary Ann is told that she must leave her Boarding School for Young Ladies, and her singing dreams are shattered. Distraught, she comes up with a plan to stay at school, oblivious to the danger it will put her in... An enchanting story of dreams and determination, set in the lively and enthralling world of eighteenth century London.