Draco and his incredibly cute butt are turned into a monster. Dum Dum Dum! And an extra Dum for luck. But will he give in to the temptations to feed on the blood of a certain well known boy? And his cute butt. I don't have a butt fetish, honest.
A master mind is running loose savagly confusing people. Millions of random plot twists appear out of no where. An author running around hitting things. Ok, that last one was the half truth. Slight slash, but nothing to disgust the faint hearted.
Harry feels his love doesn't feel the same so he has an image change. Ditto for Hermionie. Ron gets hungry. A one off, and a little random.