Documentary that traces the history of the 20th century through the story of Rogelio García Lupo, Argentine investigative journalist and historian co-founder of the Cuban news agency Prensa Latina along with Gabriel García Márquez, Rodolfo Walsh and Jorge Masetti, and also of the weekly newspaper of the CGT of the Argentines in 1968. We access the personal archive of García Lupo while he was visiting it for the last time at the age of 82, after having decided to hand it over to the National Library for future researchers to consult.