The film narrates the struggles of the Argentine working class from the beginning of the 20th century until October 17, 1945, in the perspective of the meat workers of Berisso, leading protagonists of that day.

Once upon a time there was a girl named Catalina. Every day she offered a tale to the Sun Tata Inti for he would always shine in the sky. Based in an old legend from Jujuy, Argentina.