Ever since the invasion of Lily Slender and her defeat the entire town of Ponyville is on edge. But recent discoveries have concluded that Celestia didn't transform her into the Slendermare but because of the mysterious Project: Haunt. Now every investigative pony is searching for answers. But it appears that something is watching them. Another Slendermare: The Slendermane. But this Slendermane doesn't appear to be a pony. More like a physical entity from another dimension. What is it? Twilight Sparkle and her friends are going to have to find out.