One day, Fluttershy finds some cute little bunnies, made of dust. They eat dust too, and because of this they are excellent cleaning tools. Rarity starts selling them in Canterlot. However, they reproduce like mad. With Canterlot overrun with dust bunnies, Rarity, Fluttershy and Twilight must defend the city!

NOTE: Written for a school assignment, I've had the idea for a while.