13-year-old Nat Beacon is obsessed with musicals, but has never been to one, or seen an actor who uses a wheelchair for mobility on stage. But when Nat's family moves from California to New Jersey, Nat stumbles upon auditions for a kids' production of Wicked, one of her favourites! And she gets into the ensemble! But when things go awry a week before opening night, will Nat be able to cast her fears and insecurities aside and 'Defy Gravity' in every sense of the song title?