William Prochmann is a famous pianist who, shortly after the end of the Second World War, travels the world giving concerts and, living romance in each city he passes through, meets Cezanne, the great love of his life. Almost 20 years later, Nathalie appears in his life - a virtuosi on the violin who, like the pianist, conquers audiences around the world. The story reaches the 21st century and letters, diaries, secret compartments and exciting discoveries of a well-kept secret appear on each page, where uncertainty about who to love fills the hearts of its characters.