[[WARNING: Contains what-the-buck. Please don't read while having expectations or while being intelligent. What-the-buck is not right for everyone. Consult your local MLP analyst if you're considering what-the-buck.]]
Sunset Shimmer led an ordinary life, until a huge friggin' ball of fiery death fell out of Space and conked her on the head.
And now, she's got the ability to transform into Maho-Shojo Sunsetta, the most powerful and adorable magical warrior girl in the Universe!
Can she save Canterlot High from threat after threat as the entire galaxy tries to take from her the Shimmer Sapphire that giver her her power?
Or will she--nah, she's gonna win. I've pretty much Mary Sued her.
(A parody of all those 'magical girl' amines; particularly, Tokyo Mew Mew. And because I was bored.)
Serious-ness Rating: negative three. Take seriously at your own (severe, I might add) risk.
(Rated Teen because I have yet to see an anime without a pointless fanservice scene.)

EDIT:
For those of you who know for a fact that it's spelled "Mahou-Shoujo", just go along with it; it'll all be cleared up in the finale.