It's a story about when then an alicorn name Princess Galactic and she is the Princess of the Galaxy and she was born as Alicorn before Flurry Heart was born. When she transported by King Sombra and she's in dimension with all the humans with Quirks. Then she was found by the pro heroes and take them to the UA Academy. They questioned her of who is she and where did she come from, so they decide ask her to be the UA assistant to help the students to become strong heroes.
3 parts