Twilight and her friends go through a portal to an alternate universe where the Twilight there lost to Dicord. In this story, Discord is much more evil due to after he won, he became power hungry. WARNING: killing invovled. (well, it's just one pony dying, but sorry to any Luna fans)

The mane six has to help their counterparts to see the error of their ways and undiscord them before the disharmony spirits in them take over for good.

EDIT: I'm not continuing this story. Sorry if you actually liked this trash, but I just don't have any inspiration to continue this, it was actually kind of a stupid story now that I look back on it .-. I won't delete it just in case anyone actually liked it and if people want to read it, so I'll just keep it up here just because...