" Chernobyl accident has begun in 1986 and it spread in the atmosphere a big quantity of radioactive corps which one, Caesium 137 is still present 21 years later. When we go through Europe, we're surprised to see that every single meter in a natural environment still have some Caesium 137, less or more, according to the place". André Paris, independent scientific, measure radioactive levels of caesium 137 in the Alps in the middle of Europe. The film start as a documentary to be transformed in a choral singing that comes from the forest, that comes from the Humanity.