In the sequel to "Cutie Mark Crusaders Investigators", we learn about the young unicorn who had destroyed the diorama and how Twilight has taken her under her hoof to help learn and control their magic. Excited and nervous, Twilight must learn how to teach to a student who seems to learn faster than she can teach and that sometimes, giving facts and knowledge isn't the only role a teacher or tutor can have in a young pupil's life.