[Added neither slice of life, nor adventure tag, because both will happen. There needs to be a tag for that.]

One day, while grocery shopping, Twilight Velvet finds an unknown girl, hurt and unconscious. Strangely enough, nothing can be found about the girl's past, like she just appeared out of nowhere. Knowing nothing better to do, the police puts her into an orphanage, since she is not an adult as of the time she appeared. However, before she can become lost in the system without any real chance in life, Twilight Velvet decides to take her in.

Meet Fantasia Gleam, a seemingly happy go lucky person, who also happens to actually be a pegasister. After overcoming her initial shock, she goes on to trying to befriend with her new sister "Twi-Twi" (or Twi²), go through the portal as she pleases and attend Canterlot High. The only issue there is, is that she has not seen Friendship Games and only about half of season 5. Not that she particularly cares...