You are a math prodigy, a human calculator, and extremely intelligent, however you are not a singer. And that's the last thing Corrine wants to hear from Marshall as she prepares to audition for Magnet 360�. But while looking in the mirror to see whether her fear is obvious to others, the mirror is transformed by BHH energy, and Corrine taken to the other side where she encounters opposite versions of her friends. It's a whole new world for Corrine to discover!