After years away, pianist Mathias Vogler returns to his hometown and reunites with his mentor Elena, who invites him to perform alongside her in a concert series. At the same time, haunting memories of a lost child lead him back to his first love, Claude. Arnaud Desplechin weaves multiple narrative threads in his first film set in the Lyon region, blending music, memory, and emotion. François Civil, who performs his own piano parts, and Charlotte Rampling deliver deeply moving performances in this meditation on creation and reconciliation.