Wahid and Tashi are two ten-year-old boys who live in two of the most inhospitable regions on the planet - the Teneré desert and the Himalaya mountains. And though their lives are separated by thousands of miles, they have something in common which, moreover, will represent a before and an after in their lives. For the first time, they are going to accompany their families, who for generations have worked in the salt trade, on a long and dangerous journey. Caravan is the true story of these two journeys told through Wahid and Tashi. The former will cross the Teneré desert in Niger, with a caravan of forty camels, to the Bilma salt mines, and the latter, the Himalaya mountains in Nepal, to the Dabrie salt pans.