This story is a crossover of the Mario and MLP universes. The storyline of Paper Mario and the Thousand Year Door is used, its characters replaced with that of My Little Pony.

In this story, Spike goes on his quest along with Sweetie Belle and many others to gather the Elements of Harmony and open the Thousand Year Door, all in effort to free Rarity from the clutches of Filthy Rich and Diamond Tiara!

(This is my submission for National Pony Writing Month. It is my first completed fanfiction, so think of it what you will. The quality may have been improved if I had spent more time with it, but oh well!)