Cruzita is going to be a pop star. All she has to do is win a singing contest at her favorite theme park and get famous. But she can't go to the theme park this summer. Instead, she has to help out at her family's bakery, which has been struggling ever since Tío Chuy died. Cruzita's great-uncle poured his heart into the bakery—the family legacy—and now that he's gone, nothing is the same.
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.