In a town on the French Riviera, detective Yvonne (Adele Haenel, "Portrait of a Woman on Fire") is the widow of police chief Santi, a local hero idolized by their young son. When she realizes her husband was not the model of virtue she believed him to be and that an innocent man has spent eight years in prison as Santi’s scapegoat, her world is thrown into turmoil.