The Beginning of the Chronicles

The Beginning of the Chronicles is the second prequel in The Chronicles of Equestria and The Isle of Berk

Summery
Before it all begin, before Brian came to Equestria, before Yuna and her friends discovered Berk, before the dragon start attacking Equestria, there was a Sith Lord. He was determined to create their own Sith equine, however the ritual went wrong and Nyx came out as a young foal, rather than a grown mare. Then, she escaped and landed on Earth and is token care of by Twilight and Thomas the Tank Engine. And soon is start being disliked by others, but with help from a few of her new friends, she gains some of their trust. However, the Sith had arrived to bring her back and it's up to Nyx to save her home.

Trivia

 * Yuna, Skyla, and Sharon are baby foals in this film.