Twilight Sparkle is blissfully happy to be dating Princess Luna. But when the ever-clumsy Twilight breaks one of Luna's oldest possessions, Twilight is sure that failing to fix it will spell disaster.
Luna can't help but notice the signs Twilight has been giving her lately. When things go severely wrong following an incident at a secluded lake, it all becomes too much to ignore, and Luna must make her choices.
Discord, Celestia and Cadence decide that Luna is in need of serious help in courting Princess Twilight, and so take things into their own hands. Operation TwiLuna is Go!
Chrysalis moves on Canterlot while Twilight and Luna are away on a day of research. The real problems, however, lay in the confession of feelings from one starry eye princess to one with the romantic inclinations of a stone.
Certain alicorns have no regard for the rules of space and time. An astral sub-dimension becomes a potent weapon in what appears to be a divine prank war. Shining Armor hits the sauce.
The code of the alicorn is that only those lucky enough to be born that way will stay immortal. Those who ascend have the same life expectancy as any other normal pony. ["Will you still love me when I'm no longer young and beautiful?"]