Discord is seen by many as a monster. Princess Celestia has told the story of discord the spirit of chaos and disharmony, but no pony knows the truth behind it all, until one day Twilight finds an old artifact that tells the story behind the conflict between Celestia and Discord. She finds that Monsters aren't born they are created and that not all stories end 'happily ever after'...
(inspired by the comic 'Discordantly' by the CrappyUnicorn on deviantart, 'Marvel: origins' and the song 'My Curse' By Killswitch engaged) Some thanks and credit to my brony Critical Lighthouse for helping with the grammar and editing.