"What's that?" Celestia asked herself, her eyes darting out of the window. "There's been a very strong spell cast." Her eyes eventually became affixed on the town of Ponyville,which was shining an iridescent blue. "What is going on over there?" Celestia cast a simple magnification spell to zoom in on the source of the magic. She zoomed in just in time to see Lyra's horn shatter. Celestia immediately knew what the spell was. "Oh, no." She said. ""There's nothing I can do for her now."

The spell Lyra had found had been developed by Starswirl the Bearded ages before. However, after having a test subject use the spell inside of a magical barrier, he discovered the instability of the spell and had all records of it destroyed. However, one record of it must have survived, and been discovered by an unlucky unicorn.

"This is not good." Celestia said. "It can't spread. I won't allow it." Celestia's horn lit up as magic coursed through it, sending a magical field across Equestria,creating a barrier around Ponyville. Upon connecting with the barrier, the power of the spell clashed with that of Celestia's, but the princess' power proved stronger, destroying the other spell. "Well, that's that." Celestia sighed. "I have no choice but to leave the barrier up. Should the spell somehow re-create itself, as it did with Starswirl, then it would turn all of Equestria into humans."

Princess Celestia summoned a guard. "Have somepony travel down to Ponyville and hold up a piece of paper, use sign language, or something along those lines to convey this message to the town's residents: Due to the recent transformation of Ponyville residents, no one is allowed to leave. Ponyville is officially a quarantine zone." Celestia said. Once the guard had left, a single tear rolled down the princess' face and she whispered, "I'm sorry, Twilight."