The four stories in this film take us from Belgium to the banks of the Senegal River, from the French Ardennes to the mountains of the Western Sahara. What they have in common is that they lead us to meet the sleepers. Men and women moving between two worlds, that of the absent and that of the living, between two states, that of waking and that of sleep. In each of these stories lies a mystery free from all belief, all philosophy, all attempts at explanation. A mystery capable of reenchanting reality.