After The Dazzlings are booed off stage from The Battle Of The Bands they go on a little adventure to filled with many new experiences. Adagio separates from Sonata and Aria in hopes of getting her pendant fixed. Along her way an unexpected girl decided to help her. But, why is this girl so familiar? What is she up too in her hidden room at Crystal Prep Academy? And just why does she insist on helping the lead siren so much?