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 bodyin 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.