In Burkina Faso, the rapid desertification of the once fertile plains of the Sahel caused droughts and ruined harvests, sparking a mass exodus of village inhabitants and famines that decimated populations. Yet remarkably, one illiterate peasant farmer and his ingenious farming methods have proved the key to achieving what experts have failed to do: stop the desert. This inspiring documentary tells the unique story of Yacouba Sawadogo, whose years of toil have transformed the lives of thousands.