Mario and Luigi beat up the Boo in the castle courtyard and take the entrance to Big Boo's Haunt.
Luigi: Why do we have to go here again?!
Mario: Because I said so!
Luigi: But but...
Mario: I said so!
Luigi: ...
Luigi spots a spider.
Luigi: Yikes! Can we do this inside at least?!
Mario: Ok! You take the big house, I'll take the little one.
Luigi: WHAT?!
Mario: Just do it! And quietly please.
Luigi: (Why me?)
Mario: Go already!
Luigi: *grumble*
Mario heads for the small cottage, and Luigi starts for the big mansion.
Luigi: *gulp* I wish I had a flashlight.
Meanwhile Mario was just entering the cottage.
Mario: Where could I find a Star in this place? Huh? What's this?
Mario spots a cage-like platfrom and steps on it, and it starts to go down.
Mario: This thing is slow. *yawn*
Once the platform finally stops Mario gets off and opens the door ahead, leading to a hallway with another door at the end of it.
Mario: Well, this must go somewhere.
Mario continues on. Meanwhile Luigi is still making his way to the mansion, slowly but surely.
Luigi: Maybe if I go slow they won't notice me. Huh? What's that?
Luigi looks down to see a spider poking on his leg. His face turns blue.
Luigi: G....g...g...g...... AAHH!!!
Luigi races inside the mansion.
Luigi: I hate those spiders! I hate 'em I hate 'em I HATE 'EM!!!
A Boo appears in front of him.
Luigi: AH!!! GHOSTS ARE EVEN WORSE!!!
Luigi races to the first door on the left.
Luigi: Phew, I lost the Boo.
Luigi spots a piano.
Luigi: Finally! Something normal in here.
The piano comes to life.
Luigi: Then again, maybe not. YAH!!!
The piano starts to chase him while Luigi runs like mad. Meanwhile where Mario is...
Mario: What a place. Huh?
Mario hears some banging way above him and someone screaming.
Mario: Great! What's he running from?!
Meanwhile where Luigi is...
Luigi: Ahh! Does this thing ever get tired?!
Luigi runs back out of the room, runs up the stairs, and enters the door on the far right.
Luigi: *huff, puff* Is this over yet?
Floating books come out of the bookshelves.
Luigi: What now?
Back to where Mario is...
Mario: I think I should've taken the big mansion.
Faint Voice: Yaaaaah!
Mario: Now what is he running from?!
Where Luigi is...
Luigi: Yaaah! Get away from me!
Luigi keeps stepping back until he falls through a see-saw like floor. Back to where Mario is...
Mario: Ok, now what is that music...?
Luigi: YaaaaaaaaAAAAHH!
Mario: Huh?
Mario looks up, paf!
Mario: Luigi! What are you doing here?!
Luigi: Spiders... Ghosts... Evil Piano... Hungry books... I WANT OUT!!!
Mario: Shut up, will you? Now that you're here, listen to that.
Luigi: What?!
Mario: That!
Mario points to where music can be heard.
Luigi: What is that?
Mario: Let's go look.
Luigi: No way! I'm staying right here!
Mario: Ok then. I'll go, you stay.
Mario leaves Luigi and goes on.
Luigi: Um... Wait up!
Mario: Look! There's a door. Let's go in.
Luigi: *gulp*
They enter and see what's inside: a merry-go-round.
Luigi: Wha...
Mario: Oooh. This looks like fun.
Luigi: ...
They jump on.
Luigi: Yikes!!!
Mario: What?!
Luigi: That!
Mario looks to see a picture of a Boo.
Mario: It's just a harmless picture. There's another one over there.
Luigi: Ok ok.
The picture spits out fire right on Luigi.
Luigi: YEOWWWWW!!! HOT HOT HOT!!!
Mario: Oh brother.
Luigi: Just a "harmless" picture, huh?!
Mario: Everyone makes mistakes!
Luigi: *moan* Huh? Mario, look!
Mario: What?
Luigi: Ghosts!!!
Mario turns to see a bunch of Boos coming out of the other Boo picture.
Mario: So?
Luigi: ...
Mario starts pounding Boos until they're all gone.
Mario: See? Nothing to worry about.
Luigi: ...
A Big Boo comes out of the picture.
Luigi: O.O
Luigi faints.
Mario: Then again...
Mario starts running but the Big Boo gains on him quick. He ground pounds while not looking.
Big Boo: Oooor!!!
Mario: Looks like that works!
Mario does this two more times and the Big Boo disapears, then a Power Star pops out and takes its place near the entrance of the room. Luigi wakes up.
Mario: Yippie!
Luigi: *yawn* Oie...
Mario claims the Star and does the dance.
Mario: Here we go!
Luigi: Good! You got the Star! NOW LET'S GET OUTTA HERE!!!
Mario: Onto the next Star!