EQG-The Mysterious Castle in the Woods

There's a castle in the middle of the Everfree forest. Some say that the castle is haunted since it have been abandoned for centuries and some say that it isn't haunted because ghosts doesn't exist. But one day, Sunset Shimmer, Twilight Sparkle ,Applejack , Fluttershy , Rarity ,Rainbow Dash and Pinkie Pie went jungle...