They live in Seine-Saint-Denis, a department north of Paris whose very name comes with a host of preconceived ideas, the very symbol of the troubled suburbs. None of these young people has the slightest experience of mountains, let alone high altitude. And yet… Thanks to one of the most active neighborhood associations in the Paris region, they are embarking on the adventure of the Fraternité expedition.

At the heart of an ambitious social integration project, they hope to climb a high peak in the Andes, in Bolivia. From the Paris region to the Alps and on to the highest summits of South America, this is an unprecedented journey, full of surprises and human richness…