Set in the French coastal town of Bouville-Sur-Mer, Désenchantées follows the mysterious disappearance of 15-year-old Sarah Leroy, a case that shocked the nation. Though a suspect was quickly arrested, unanswered questions and speculation still remained.

Twenty years later, journalist Fanny returns to uncover the truth behind the tragedy that has haunted her for years. As she digs deeper into the case, memories start to unravel connecting Sarah’s fate to her own past, her sister Angélique, and a group known as “les Désenchantées” (the Disenchanted), girls who knew Sarah all too well.