Vamponies have become a growing problem ever since the Flutterbat fiasco (even though Fluttershy was only really a threat to apples), and Rainbow Dash has had enough. Lately, she's been borrowing Twilight's book of vampony hunting and studying the methods of seeking out and exterminating vamponies.

Armed with this knowledge, she vows to clear Equestria of this nuisance. Or at least try to.