The story of the founder of Basque nationalism, Sabino Arana Goiri. The biography of the politician who, although he lived only 38 years, has been one of the most influential figures in the history of Euskadi. The film aims to delve into the keys of the thoughts of the father of Basque nationalism, and describe an era and a generation of people, as unknown as essential and tumultuous history of the Basque Country.