In a universe where things went differently, Twilight Sparkle reports to Princess Celestia on her findings regarding the death and subsequent apparent re-emergence of Discord. This is a sequel to "Discord In Hell (Not Literally)", although really more like a prequel; that story is mature-filtered for a reason and this story will probably make little sense without it, but this story, while dark, is not explicit and therefore some people who prefer not to read mature fics might see it on their feed.
There is now a series page: Elements of Opposition
Discord travels to an alternate timeline so he can have fun without angering his new friends, and ends up in a horrible situation.
Twilight Sparkle, element of Magic and Order, reports to Princess Celestia on her findings regarding the apparent re-emergence of Discord.
Spike is trying not to muster up any sympathy for Discord.
The Mane 6, plus Spike, go to a universe where their doppelgangers have been turned evil, to rescue Discord.