Matthieu is a young musical genius who, fascinated by the magic of Versailles and its wild parties, yearns to be part of the orchestra of Louis XIV, the Sun King. What he cannot foresee is that a brutal murder will open the doors to the palace for him to carry out the sovereign's most ambitious project: the transcribe the meolody of the soul. Soon he will discover that he is not the only one to covet this musical score, among whose notes is hidden the alcehmical formula that will give to its owner the secrets of the universe. In order to win the race, Matthieu undertakes a dangerous expedition to Madagascar, the last unexplored Eden, a legendary island chosen for its purity to protect the most ancient music of all time. From then on he must face death at every step of the way, but at the same time a world full of bewitching romance will open up before him…