An elite prep school frozen in the snow. Three friends linked by a tragic secret. One girl taken by the night. The Côte d'Azur - 25 years ago: One freezing night, as her campus is paralyzed by a snowstorm, 19-year-old Vinca Rockwell, the most beautiful and glamorous girl in her prep school, runs away with her philosophy teacher, with whom she has been conducting a secret affair. For Vinca, "love is everything or nothing." She will never be seen again. The Côte d'Azur - Present day: Once inseparable, Manon, Thomas and Maxime -- Vinca's best friends -- have not spoken since graduation. They meet again at their reunion. Twenty-five years earlier, under terrible circumstances, the three of them committed a murder and buried the body in the gymnasium wall, the same wall that is about to be demolished to make way for an ultramodern new building. What really happened that long-ago winter night? Now nothing stands in the way of the truth coming out.