When a Rakdos Planeswalker comes to Equestria all kinds of debauchery is bound to happen. But when it's the guild's long lost organizer and son of its founding monster, who's to say what kind of fate will befall the orderly realm? Will Equestria be able to handle the Prince of Riots or will the land fall into pit of madness? Only Nix can tell, but will he be the monster that the ponies fear or just the thing the plane needs to prevent its own destruction? It's time to start a riot.