This is the Spanish only version of The Best Mariachi in the World. Everyone in Gustavo's family is in a mariachi band. Everyone except Gustavo, that is. They all play violíns, trumpets and guitars. They all make wonderful music in restaurants and at wedding parties. Gustavo would love to join the band, but he can't play any of the instruments. What's a wannabe marichi to do? Follow Gustavo as he finds his place in the family mariachi band.