Celestia has sent word to Twilight and her friends that a final threat has been put on Equestria but none of them knows who and when it will attack. the only thing they know is that it will strike Ponyville first so it can destroy the elements of harmony. only Twilight and her friends can stand a chance and it is up to them to make sure that Equestria will stay and thrive. but they will be ultimately shocked when they find who it is exactly the have to battle.