In 1976 in Nice, Agnes, the daughter of the owner of the Palais de la Méditerranée, falls in love with an older lawyer.
François Marsault, a war veteran, makes the most of his retirement alongside his wife Annie. Authoritarian and ruthless, François rules his family with an iron fist — but when he discovers that his esteemed wife cheated on him 40 years ago, he files for divorce and confronts her former lover, who lives in the French Riviera.
