Lázaro Cárdenas, Mexico’s president between 1943 and 1940, came from a modest aborigin family. In 1914 he joined the Mexican Revolution and later on he created the Mexican Revolutionary Party. As first mandatary he imposed the agrarian reform and the nationalization of both railways and petroleum, wich confronted him with the United States. Cardenas is a documentary that overviews his biography and how his government changed Mexico’s history forever.