Image imported from derpibooru
Original Description:

As it turns out, you can only look through books for so long, and Flurry Heart is not her aunt who could totally look through books for hours on end. It came as no surprise to Princess Twilight when she found Flurry passed out on the ground of the library. She gently picked up her niece, gently carrying her to the royal bedrooms to let her rest properly…
… Meanwhile, Flurry Heart awoke in a mysterious area she had never seen before, one that glowed with millions of small lights like stars to where even the very ground she found herself on was made out of them. The sound of hoofprints caught the mare’s attention when she saw a tall figure, one that- unlike the area she was in- she recognized immediately. Princess Luna.

“ It’s not night yet, little star, what are you doing so exhausted? “
“ I… Guess I got too exhausted trying to look for answers… It’s Starlight, she’s been acting more aggressive and villain-y for a while now and Luster and I are trying to figure out why… “
“ I see… Perhaps I can assist you… Would you like to learn the art of dreamwalking? “

if it isn’t the mare of the moon. looks like it’s dream time.