Twilight's been almost alone for a thousand years, and in a desperate attempt to bring her friends back, intentionally unseals Discord, Spirit of Chaos, from his stone slumber.

He's in for some nasty surprises, since she's changed quite a bit over the years...

Caramel likes Big Macintosh.

Big Macintosh doesn't know.

Rainbow Dash and Applejack are romantically involved.

And just how much does Caramel admitting his crush change all their lives?

Rampant coltcuddling and fillyfooling, in the romantic sense.