Like all bronies, Anon wishes to go to Equestria. He was hoping to show up a little later in the show's timeline, however. And also as an adult. And male. Aw well, Celestia's School for Gifted Unicorns won't know what hit them! And neither will Anon.
With the exodus of Chrysalis, Anon's life finally starts to go back to normal. Or rather, as normal as it can be when being the adopted son of the spirit of chaos. But new problems await him. What they are? Who knows...
Discord makes a deal with an anonymous human. The human gets to live a good life in Equestria. And Discord? he gets to have a son of his own. Of course, his only reason is to impress Fluttershy and annoy Twilight.