Twilight Sparkle was fiddling with an amulet she found in the Castle of the two sisters. When she drops it, it shatters into pieces causing a fog to blind Ponyville. One by one Ponies disappear, taken by the thing in the fog that makes the sound of another pony to lure others. Twilight barricades herself and Spike inside not wanting to see what was out there until she hears her friends.....