It starts out as going thru a doll factory taken over by a crazy person who is using humans to make dolls. Than at one point it randomly switches to a doll house. And the last room has a bunch of manaquins hanging from the ceiling and one is a scare-actor with a few other scare-actors hiding in the room. On the Kings Dominion Youtube page there is a walk thru of the house. Here is the video.
A couple things I've seen about Haunt that seem really cool.
There's a house that you drive through on antique cars, this seems epic. Also, the motion ride is based on Elvira, as a fan of bad horror movies, this is confirmed epic.
The Haunt will probably take you 2 nights to experience completely. Unless you walk really really fast... I was in the park before guest even got in, rode 2 rides and went in about half the mazes one night and still didnt get to do everything.
On Friday nights, if you do it right, I was able to do all mazes excluding Blue Ridge Blood Bath, and it only took me about 2 and a half hours. Than I went to see Fangs (RIP).....
Oh, I do want to say I was there Sunday, but was only able to check out one house.
I went to Asylum, and was very underwhelmed. They play Metallica, which was very poor choice for haunted house music. I should be going Friday and I'll be able to check out the rest.
I will also be going Saturday, along with thousands of others. Not sure if I am able to stay for Haunt tho
You should have a good time, it is fairly good this year. Make sure you do Corn Stalkers and Club Blood at least, they are by far the best, and Club Bloods new layout is awesome!