Yann Arthus-Bertrand makes a national inventory. The photographer's mission is to put faces to statistics and thus make a huge photo album of a large family.

He travels across France, like others before him, Albert Kahn for example, who at the beginning of the 20th century wanted to constitute the "archives of the planet" and had traveled the world to witness them. See the developments, the new professions, theNew families, the rural people, the urban people. The rich and the less rich, the young people and their elders.