Before the Concert...

"How can I move on 'cause now that my future has become your past?"

Did you ever wish to have a time machine so that you can bring your happy moments back? Or maybe, you can undo things that you regret at the past?

Tiffany was so devastated because of Jessica's departure. All she wanted was to undo what happened. But, she was stuck at the past so she can't move on. Let's see how Tiffany and SNSD's happiness will come back.