Twilight Sparkle, loyal student of Celestia, awakens one night to a terrifying dream. A dream that she can neither fully remember, or fully forget. What she would so quickly and normally pass off as just a silly nightmare, seems to shadow her thoughts and play at the back of her mind. She cannot shake the feeling that this dream was something more, something dark, meant to be hidden away and lost to time. As she seeks out the reasoning and cause for this dream, she is visited more and more by these unwavering night terrors. With each step she takes to uncovering their secret meaning, she is set back even more by her mentor and friend, Celestia. With no other choice but to turn to the Princess of the night, Twilight hopes to rid herself of these visions and finally decipher the message they contain.