Polly grew up in sunny, warm Sydney, Australia but for the last two years she has been trapped in an isolated, cold and draughty boarding school in England that she hates. She's lonely and has little in common with her stuck-up companions.It's 1983 and Polly is now entering her third year at Atherton Castle and there is no such thing as the internet, smart phones or social media. Instead, Polly has to rely on her imagination, telling herself stories to get through miserable lonely nights in the bleak Castle. One winter's night as she's lying awake, she hears piano music playing on the landing below her dormitory. She goes to investigate but the piano player has vanished before she can get there. Polly is determined to find out who the mystery piano player is. Her investigations lead her to places and discoveries she could never have imagined and in the process she learns a lot about herself and what happens if you dare to be brave and hold your head up.