One sleepless night, Mathieu sets off into the mountains. He hikes as far and as high as he can, until he is utterly exhausted. The next day, Félix, a farmer, reports him missing to the police. Viviane, Mathieu's mother, arrives in the valley to expedite the search, but to no avail. Rumors begin to circulate, amplified by the local press. Distraught, Viviane tries to reach out to Félix, hoping to break the silence and isolation that have engulfed them both.
