I was thinking it would be a chance for Orinda to be king again but this time around the plot line of the entire Koopa Empire changing into an alternate dimension and Dinosaur Land going to ruins along with it. Koopette is Queen of the Vampires in the alternate world and Orinda is portrayed in this world as the King. There is an enchanted warp whistle that the 'heroes' need to get out of the vampires' possession to return the Koopa Empire's reality back to its correct one. A small group of heroes who have remained unchanged from the world's sudden transformation either have to kill the vamps. If the hero party dies, reality will stay in rule of the Vampires.
It isn't one determined person who saves the day but for whoever steps up to the challenge and to their own accord.
There will be four slots for Vampires including Orinda and Koopette. Two others are welcome to join the Vampire side and we'll need 4-5 folks to be the heroes.