The Box Ghost has escaped the ghost jail and is ready to unleash his boxed up fury on Amity Park. But, due to some navigational problems, he finds himself in the strange town of Ponyville. To him, there is no difference as long as he can still make the residents tremble in fear. In the middle of all this chaos, it is up to our favorite cross-eyed mailmare to package this ghost and ship him to his doom!