When her favorite rock band Lulu and the Handbags announces a contest, Georgia is determined the all-girl rock band she's in will win--even if she has to ask her brother Rafe for help.

Twelve-year-old María Luisa O'Neill-Morales (who really prefers to be called Malú) reluctantly moves with her Mexican-American mother to Chicago and starts seventh grade with a bang--violating the dress code with her punk rock aesthetic and spurning the middle school's most popular girl in favor of starting a band with a group of like-minded weirdos.

When the star of The Grateful Fred receives threatening letters, he calls on Melvin, the superhero in charge of Los Angeles, and his assistant, Candace, to stop the criminal and his henchmen before they destroy Fred's reputation.