In 1920, workmen of Patagonia (Argentina), grouped into anarchist and socialist societies, decide to strike demanding better working conditions. Among the workers there are numerous European immigrants acting as ideological ferment of their peers. The situation is unsustainable and Yrigoyen government sent from Buenos Aires, Lieutenant Colonel Zavala to impose order ... Based on the book "Los vengadores de la Patagonia trágica", written by Osvaldo Bayer.