Days, weeks and months have passed since the end of Twilight's unusual punishment in a Kindergarten in Canterlot, and since Princess Celestia has given up to her quest for Twilight's regression. In this time, Twilight has been living her life as usual, thinking that the issue was done for, and never to be brought up again but as a quirky tale.

However, one day, Twilight receives a box destined to her. What is inside of it will show her the presence of a previously-unseen unseen agent in her story where she had fought against her mother's wishes. And, later on, she will receive yet another pack, which will describe how her tale could have gone, with some changes in the timeline...

Credit to SnowForst, a wonderful gal that has written most of this work.