The film depicts the last thirty years of technical innovations and changes in the story of Barolo, a red wine produced from Nebbiolo grapes, almost unknown until the 1970s (apart from its land of origin, an area of 11 communes in the Langhe) and now considered one of the best red wines in the world. This is partly due to the work and innovations of the Barolo Boys, or Modernists, who introduced a series of technical innovations in the world of Italian wine.