Rarity’s latest customer is completely unexpected

Biding his time in the ether, King Sombra is summoned by a surprising pony to join him on an epic quest to the Dragon Lands.

Luna and Celestia debrief after the “Sibling-supreme” security debacle. Their discussion of the internal threat to security reveals a lot more than anticipated. (Twilight, Cadence, Shining Mentioned)

Applejack finds a nightingale in the apple orchard... and her siren’s call cannot be resisted.

Twilight’s fears manifest in a dream, as one by one she watches her friends pair off, leaving her alone. Is that her fate as an alicorn princess, to end up alone, or is something more in store for her future?

While dealing with the emotional fallout, post Celestia's failed retirement, Twilight begs a favor for the future. This unveils the depth of their feelings.