During a school trip, the bus breaks down. Zoé, a quiet teenager, must stand up to Antoine, the most popular guy in school. There's no help in sight. Will they have to spend the night in the forest?

As the group suffers from dehydration, Florence takes the lead in finding water. Éloi, haunted by a strange dream, sets out in search of answers. An unexpected discovery seems promising, but the mystery of the forest deepens.