In 1990, under the regime of dictator Ould Taya, certain Mauritanian towns with military bases turned into death camps for hundreds of black soldiers. Twenty years after these events and seven years after the fall of this dictator, Mahamadou Sy, a camp survivor living in France since, returns to Mauritania. A long journey from Paris to Nouakchott (Mauritania) via the towns and concentration camps of La Guerra, Inal and Jreïda leads Mahamadou Sy to the place of his imprisonment.