The famous tragedy of Charlemagne and his nephew the Duque of Mantua, in conflict about a murder. The play, six hours long in its complete version, is performed each year in several villages of Saint Thomas Island, an ancient Portuguese colony. The characters, interpreted only by men wearing masks and sumptuous clothes in European style, are transmitted from father to son, and declaim an unalterable text. Several interviews with them lead us to understand the almost sacred function they are representing.