In the competitive world of high school mariachi, the musicians from the South Texas borderlands reign supreme. Under the guidance of coach Abel Acuña, the teenage captains of Edinburg North High School’s acclaimed team must turn a shoestring budget and diverse crew of inexperienced musicians into In the competitive world of high school mariachi, the musicians from the South Texas borderlands reign supreme. Under the guidance of coach Abel Acuña, the teenage captains of Edinburg North High School’s acclaimed team must turn a shoestring budget and diverse crew of inexperienced musicians into state champions.