In the world high school mariachi, musicians from South Texas reigns supreme. Under guidance of coach Abel Acuña, the Edinburg North High School team must turn shoestring and diverse inexperienced musicians into state champions.

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.