Thibaut is an internationally renowned conductor who travels the world. When he learns that he was adopted, he discovers the existence of a brother, Jimmy, a school cafeteria worker who plays the trombone in a brass band in northern France. On the surface, everything separates them, except for their love of music. Recognizing his brother's exceptional musical talents, Thibaut takes it upon himself to right the wrongs of fate. Jimmy then begins to dream of a different life…