The film focuses on following the pianist Lucas Debargue, during the year after the Tchaikovsky competition which revealed him, through his encounters, his discoveries and his quest for music. Young and early in his career, Lucas discovers: different countries, tours, concerts, studio recording, report to the conductor, chamber music partners, after-concerts, success, fans, and autographs. But all this is anecdotal beside the main one: music. From there, the film is structured around three main axes corresponding to those of all great musicians: interpretation, improvisation, composition.