Music has always been a means universal communication, able to connect people who are very different from one another. This is the case with Don Plutarco, who lives a double life together with his son Genaro and his grandson Lucio: they are at the same time musicians and humble peasants, but also support the peasant guerrilla war against government oppression. While the soldiers are guarding the village, the rebels flee to the hills leaving behind all their weapons. As the guerrilla troops get ready to organize a counter-attack, the old Plutarco puts into practice his personal plan of action. He pretends to be a harmless and old violin musician and thanks to this strategy is able to return to his occupied village to retrieve the weapons hidden in a wheat field. The music of his violin fascinates the soldiers’ captain, who orders Plutarco to come back and play for him every day. Plutarco has his music but not the weapons, while the captain would like to crush the rebellion with the army, but loves music. The film is a tribute to the Mexican peasants’ courage who struggle in defence of their rights but also to the richness of the Mexican popular traditional music that today is dying out.