Astrid Thompson finally succeeds in fulfilling her father's dream: to bring together four Stradivarius for a unique concert, eagerly expected by music lovers around the world. But Lise, George, Peter and Apolline, the four virtuosos recruited for the occasion, are incapable of playing together. The rehearsals are one ego crisis after another. With no solution in sight, Astrid decides to go and find the only person who, in her eyes, can still save the event: Charlie Beaumont, the composer of the score.

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This charts the journey of a fierce young woman, Habi, and a budding new mayor, Pierre, crossing paths in an underprivileged suburb on the outskirts of Paris. Habi, a native of the suburb who is involved in social orgs helping locals, becomes a political figure. Pierre, meanwhile, is a former doctor who takes the city's reins after the mayor's death and sets off to follow his agenda.