When Cruzita's not rolling uneven tortillas or trying to salvage rock-hard conchas, she has to take mariachi lessons, even though she doesn't know how to play her great-grandpa's violin and she's not fluent in Spanish. At first, she's convinced her whole summer will be a disaster. But as she discovers the heart and soul of mariachi music, she realizes that there's more than one way to be a star―and more than one way to carry on a legacy.