In the eyes of his 15-year-old son Victor, Christophe Perrot is a «control freak» since the death of his wife 3 years ago. When one of the chaperones for the school snow trip dropped out just before Christmas vacation, Christophe stepped in. Both Marina Aouate, the bubbly SVT teacher, and Victor are less than thrilled. Christophe, for his part, is reassured until a mysterious gift strikes him: he can hear the thoughts of teenagers, including those of his beloved son. His well-ordered life turns into a nightmare..