After finally forcing open a rift vortex by magical means, Celestia is made proud of herself for such a feat. Something which nopony has really been able to do successfully. Then all goes wrong when a pegasus is rocketed from the vortex, through several castle walls, and even deep into Canterlot Mountain.

That's not all. But now, Celestia has assumed an old form that nopony remembers, her old form, before her contract with the sun. And now, she's spending time with the pegasus.