Based on a true story in the American owned Cananea mine. It depicts how the owner profits while the Mexican workers struggle to survive and are exploited for their labour.

Narration of one of the bloodiest episodes of the Mexican national history, The Tragic Ten, beginning when General Victoriano Huerta sent to kill President Francisco I. Madero, Vice President José María Pino Suárez and Senator Belisario Dominguez. The film recreates the moment of the execution at the hands of Huerta and his accomplices Bernardo Reyes, Félix Díaz and Manuel Mondragón.