Twelve-year-old Glory Brown is desperate for adventure far from her family’s quaint, quiet life at The Light Inn. Generations of Browns have been stewards of this humble hotel, which acts as a sanctuary in the stretch of monster-filled land called the Seam. But Glory wants nothing more than to learn how to use her Moxie, a special magic only kids have, and to train to become a spherinaut like her mother, exploring and documenting the perilous depths of the Outersphere. When a mysterious boy named Marcus appears one day on a top-secret mission for the Parliamentarium - the school for aspiring spherinauts - Glory packs up her beloved books and sets off on a once-in-a-lifetime journey that will shuttle her across time and space . . . and reveal new dangers lurking in the worlds beyond the Seam. For there’s mischief afoot that’s threatening the balance between the worlds, its magic, and its monsters. And it’s up to Glory to find a way to fix it before it’s too late.