We all know that two princesses reign over Equestria, but just what goes on as the world makes way for the moon and then for the dawn? What changes occur to all the two lights touch? What goes on as the two meet again in the hours before day break? Luna tries to prevent discord from winning her sister's hand, and in the process meets a strange stallion. Maybe she'll abandon breaking the two lovebirds apart for one night? Or maybe she'll act as if she didn't just meet the most curious of ponies?
(Sombra X Luna and Celestia X Discord, so no hate, or don't read!)
This is something I came up with when thinking of the seelie and Unseelie fairy courts I read about, it ended up a bit different than I thought it would, but the idea still stands. I have it nearly finished, but I need to work on editing it a bit.