Hey there. Name's Discord. I'm the janitor at a high school. I clean up after bratty teenagers and the odd drama queen or two that turns into a demon and wrecks up the school. Ain't my job grand?
Princess Luna sees somepony's dream, one of a more intimate variety. Normally she would just move on without a second thought, but there's something different about this one.
Trixie appears once more in Ponyville, babbling about how she is supposed to be the Element of Magic and how Celestia is the evil Tyrant Sun. Has she gone insane? Or is something larger happening?