Pays de Gex, on the French-Swiss border, where the CERN Collidor lies buried beneath the ground. PA and his gang are in their last year of high school. 100 meters below their feet, the LHC, the most powerful particle accelerator in the world, causes proton collisions to recreate the energy conditions of the Big Bang, and detect particles unknown to date. As winter sets in and PA sees the world changing around him, he begins to observe strange phenomena, changes in the environment, imperceptibly at first, then his whole world seems to tip over...