With the status quo of Equestria hanging in the balance, the celestial bodies out of control and both Princesses out of the picture it comes to Twilight to maintain the order and try to save as many ponies as she can, it won't be easy and she will need the help of a newcomer one that says to be someone that makes bad dreams go away. Can Twilight trust her? And what does she means with a Demon in Equestria?