In Leçons de Ténèbres, four bodies, three adults and a child become the mouthpieces of stories that have been forgotten or that we have tried to make disappear. These people burrow, hunched and curved, until they unearth the invisible. They transform, disappear and metamorphose. In turn, they bring forth visions and assist and challenge them. For this new creation, Betty Tchomanga continues her research on Voodoo cults and crosses them with questions of climatic and social emergency.