In rural Mexico, during the peasant revolts of the 1970s, Plutarco, his son Genaro and grandson Lucio lead double lives. On the one hand, they are simple country musicians, and on the other they actively support the peasant guerrilla movement against the oppressor government. When the army occupies the village, the rebels are forced to flee and leave their ammunition behind. Making the most of the fact that he looks like an inoffensive violinist,...

A Mariachi group will leave their hometown for the first time to perform at a national competition in Mexico City. After being selected, this band of seven sets out to find an eighth member to be able to compete. They decide to recruit Martin, the son of one of the members, who happens to be in a rock band. The eight men must endure many challenges which test their friendship.