In a small quiet village in the Ardennes, a sixteen-year-old girl disappears into the forest after calling her teacher in the middle of the night. Captain Gaspard Deker, a former soldier and newly arrived single father is conducting the investigation with Virginie Musso, the local cop. Also helping is the teacher, Eve Mendel, a solitary young woman with a mysterious past: she was found as a child by the villiage doctor wandering silently in the same forest.