A thorough analysis of the socio-politics of Mexico, within the historical context of the Mexican Revolution reality. Includes footage from the 1910s, interviews with farmers, politicians, intellectuals, middle class, union, etc, as well as scenes from the life of an Indian family in Chiapas, their religious rituals, their crops, trials and bilingual schools. The film ends with the slaughter in the Plaza de Tlatelolco in 1968, during the infamous Olympics.

Based on a true story, the film narrates the life of a fictitious Peronist union leader who, after years of militancy, gains power in the union during the 1960s and gradually becomes a corrupt bureaucrat.