The film, which shows the Battle of the Ebro and the last days of the Spanish Civil War, is an unpublished story by Patricio Azcárate (London, 1920- Alicante, 2018), son of the ambassador of the Second Republic in London, Pablo de Azcárate. Patricio Azcárate participated as a volunteer in the Ebro where, due to his knowledge of languages, he was assigned to the General Staff and served as a translator with the brigade members.