Nina Rutherford is a musical prodigy who reluctantly joins the Chalet School in Switzerland after her father's death. Initially withdrawn and focused solely on her piano playing, Nina gradually opens up as she makes friends and embraces school life. But her single-minded dedication to music sometimes clashes with school rules and expectations. As Nina navigates social relationships, school traditions, and her musical ambitions, she learns valuable lessons about balance and belonging. With the support of her new friends and understanding teachers, will Nina blossom both as a musician and as a person?