When fifth-grade best friends Izzy, Hazel, and Scarlet are given magical hairnets from the three old lunch ladies, with the promise of superpowers, the girls can’t wait. However, their hopes of sparkly capes and tight-fitting super suits are soon crushed as they put on the hairnets only to find themselves transformed into grannies with baggy pantyhose, huge bottoms, and saggy arms. Can the girls still save the day and take down the bad guys as old supergrandmas? Will their friends find out their secret? And why did Hazel’s super suit come with a banjo? Get ready for the zaniest new superheroes on the planet—the Banjo Pickin’ Karate Kickin’ Crime Fightin’ Grandmas.