Image imported from derpibooru 
Original Description:
 
Stalliongrad has been a topic of fear and concern for years in Equestria at large, especially in the Royal’s areas of control. As such, ponies have gone to great lengths to avoid contracting Stalliongrad and ordering goods from them in the recent years. As the “National Protector”, Nightswift decided to ‘invite’ the royal sisters to Stalliongrad for a diplomatic trip. NS figured she’d ambush the sisters while they were on a trip to the Rainbow Falls. A quick stun spell and a flurry of rope and horn rings, and NS had trussed up Celestia and Luna. However, Amberlue had just so happened to also be around and had witnessed the kidnapping. NS didn’t want the international surprise to be discovered just yet and chose to take Amberlue as well as the royals. After making sure Amberlue’s crotch rope was nice and tight, it was time to go, NS took her trussed up trio and made off before anyone was the wiser.
 
I wonder what she’s going to do with them?…
 
Commissioned by my good friend and owner of Amberlue @ MaelstromConnor