Rarity can't sleep. Applejack had the audacity to fall asleep facing Rarity, and now she can't get kissing her friend out of her mind – and isn't sure if she wants to. But kissing your friend while she's sleeping is wrong...
"The stars have faded. The moon has grown distant from me. Sister, what has happened during the thousand years of my absence? What has happened to my night?"
A pony very close to Luna notices that she's been sneaking off after nightfall for some time. When that pony has all the tact of a battleship, the only thing for sure is that things are about to get heated.