After years in exile, virtuoso pianist Mathias Vogler returns to Lyon to perform farewell concerts with his mentor, Elena (Charlotte Rampling). However, his homecoming revives a past affair with his best friend’s wife, Claude (Nadia Tereszkiewicz). Meeting her child who resembles him, Mathias is plunged into psychological turmoil. As memory, guilt, and identity blur, his fragile state begins to unravel. In this evocative melodrama from French auteur Arnaud Desplechin (A Christmas Tale), music becomes inseparable from personal history, as Mathias confronts the past that continues to shape—and haunt—his present.