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!

Vaughn tells Corinne that he saw her on the Pearadyne security tapes- talking to his mother. He becomes angry at her when she denies ever seeing his mother.

Z explains to the science club about friction- how it can cause things to fuse together. He demonstrates with two blocks of metal. When the lesson is over, Corrine leaves quickly, followed by Vaughn who doesn't believe Corrine is telling the truth about his mother. As the remaining science club members are leaving, they notice that the metal blocks have fused together, despite being set apart. Something clicks and they go to warn Vaughn and Corrine, but it is too late. Vaughn grabs Corrine's wrist to stop her, and suddenly they are fused together and can't separate. Now in order to come unstuck, Vaughn and Corrine must cooperate to find out what really happened when Corrine went through the wormhole.