As if life weren't complicated enough, teenager Rocket Malone has just learned that her mysterious Aunt Polly is actually Polyhymnia, a Greek Muse who desperately needs her help. Now Rocket needs to juggle middle school and apprentice Muse training, learn how to ride Pegasus and blow glass, battle Zeus and catch a crazed nymph named Echo -- all without losing her best friend or looking like an idiot in front of her crush Ryan. As she strives to inspire others, Rocket learns to trust her own voice and realizes that the most important spark she must ignite is her own -- because the brighter she shines, the more she lights the way for those around her.