Frank has a gift for finding his customers the music they need to hear. When he meets Ilsa Brauchmann, a mysterious and beautiful woman with no ear for music, and engaged to another man, he falls in love. She is way above him, she will never be his, but he will take her on a journey through music.
Thirty years later Ilsa returns to find Frank. The shop has gone; no one knows where he is. All that remains is a series of clues, each one related to music. Ilsa resolves to follow them all over Europe and find the man she should have chosen all along.