In 1962, the Soviet Union, one of the countries that were most interested in the success and spread of the Cuban Revolution, sent one of its great filmmakers to Cuba, namely Mikhail Kalatozov (who shortly before had won the Palme d’Or at Cannes, with his film The Cranes are Flying), entrusted with the mission of directing what was to be a great epic poem. Kalatozov was endowed with human and technological resources of a kind that had rarely been seen before in the History of Cinema. Filming spread over two years and resulted in some of the most impressive cinematic images ever produced. Despite this, the film was a resounding flop, both in Cuba and the Soviet Union, and was immediately committed to the archives until, more than 30 years later, Francis Ford Coppola and Martin Scorsese rescued it from oblivion. The documentary by Vicente Ferraz makes use of the classical structure of interviews and images from the archives to tell the history of this production, its idealisation and its belated recognition.