Lucille is a teacher at a girlsโ school in nineteenth-century England, but her twin sister, Susanna, is a high-class courtesan. One day, Susanna shows up at Lucilleโs door, asking Lucille to pretend to be her and stay at their late fatherโs house while Susanna is away! Lucille canโt say no to her sister, so she agrees to play the part of a courtesan, but what will she say when her new landlord, Count Seagrave, asks her to become his lover?