When the portal gets out of control, 3 areas get corrupted by Strong and dangerous Equestrian magic. With Princess Twilight returning and having an idea to stop this problem, she uses a new spell to stop the stature from leaking more magic but the spell will wear off in a month. She unfortunately can't help her friends because she has to go back to Equestria again. It's up to the Mane 7 along with Human Sunset to go out of town and stop the corruptions.

Thanks to MoJoK20X for editing this.
https://www.fimfiction.net/user/221451/MoJoK20X