黑白纪录片关于20年代巴西叛军领袖普雷斯特（1898 - 1990）的传奇人生，在当时他与巴西独裁政府斗争，被称为“希望骑士”。巴西著名作家Jorge Amado对他非常推崇，并在1942年为其写了一本同名传记。 Brazil's history during the 20th Century serves as a background to Luiz Carlos Prestes's curious course. The Knight of Hope, as he was known, took part in the epic march of rebellious soldiers in the '20s, when he could testify Brazilian people's misery. After that, he became a communist and started to fight for more justice in his country.