Abandoned as an infant, fourteen-year-old Anna Maria Dal Violin is one of the elite musicians living in the foundling home where the "Red Priest," Antonio Vivaldi, is maestro and composer. Fiercely determined to find out where she came from, Anna Maria embarks on a journey of self-discovery that carries her into a wondrous and haunting world of music and spectacle, bringing eighteenth-century Venice magically to life.