At the beginning of the 20th century, a young officer engaged in colonial work, Lieutenant Diego Brosset, writes a novel. In this novel, he puts himself in the place of the other, the one opposite, the one who fights against him with weapons in hand and whom the West has not touched. Witness and actor, Diego Brosset cannot forget the world that is about to disappear before him. He warns the reader of his betrayal. He is mad to embalm the dead. Only the lesson of humility should have survived. But to be humble is to renounce the joys of memory. He pays the most beautiful tribute to a stranger. We are on the other side, among the greatest hunters and nomads of the desert. We are lucky to have this testimony, it is the unusual story of an inhabitant of the Sahara. It is the story of Alifa.