While experimenting with new spells, Princess Twilight and Starlight Glimmer died when a spell backfired with fatal results. Due to a screw-up in paperwork, the pair's spirits were called to Hell.
Unfortunately, it was beyond Devil's power to send Twilight and Starlight to their rightful place in Heaven. Until God could eventually get them, they had no choice but to suck it up and settle into their new home.
However, one of them got a little carried away with making the best of their situation...