In the Ghost Zone, Two Headed Parrot was looking through a map of the Ghost Zone.
"We're lost." said the top head parrot.
"Lost? Let me see the map." said the chest head parrot.
Top head parrot showed chest head parrot the map.
"Here's your problem, you're reading it upside down." said chest head parrot.
Top head parrot flipped the map right side up.
"Oops." said the top head parrot, "Now I know where we're at."
"Where?" asked chest head parrot.
"Lost." said top head parrot.
"You're an idiot." said chest head parrot.
Top head parrot noticed something.
"Hold it, I think I see something." said top head parrot.
The two heads then see a figure in the distance, it turned out to be Fright Knight.
"That's got to be the ghost we're looking for." said chest head parrot.
Two headed parrot grabbed a jar.
"Good thing we brought this anti ghost jar with us." said top head parrot.
The parrot opened the jar, snuck over to Fright Knight and trapped him in the jar. Later, Two Headed Parrot returned to the lair.
"Took you long enough." said Joker.
"We got him." said the top head parrot.
"Good, now release him." said Nega Dragon.
Two Headed Parrot opened the jar and let Fright Knight out. Fright Knight inspected his surroundings.
"What mystical place have I landed in?" said Fright Knight.
Suddenly, a green beam shined on Fright Knight, weakening him. The green beam was originating from Nega Dragon's robotic hand.
"Like my ecto beam? Managed to use some ecto rainium to make it. Found some of it while I was in space. Now, I brought you here to take part of my latest plan for world domination." said Nega Dragon.
"I'll never take part of your diabolical plan, never." said Fright Knight.
"Then I'll just keep on shining my ecto beam on you." said Nega Dragon.
"Alright, I'll help out." said Fright Knight.
Nega Dragon stopped shining his ecto beam on Fright Knight.
"Good. My latest plan involves sending you to a medieval fair and terrorizing it, that way no one will ever think of knights the same way ever again." said Nega Dragon.
"What does that have to do with a plan for world domination?" said Plankton.
"I don't know, I just hate knights that are living. Always chasing dragons." said Nega Dragon.
"I shall help you out with your plan. When does the medieval fair start?" said Fright Knight.
"Tomorrow." said Nega Dragon.
The next day at the mansion, Danny was dressed up as a squire.
"Come on Shaggy, let's go." Said Danny.
Shaggy came out wearing armor and pushing a wooden horse on wheels.
"What's with the wooden horse?" said Danny.
"I tried to make Scooby look like a horse, but now he's stuck in there." Said Shaggy.
"Reah, ruck." Said Scooby.
"Look, can we just go? We're missing a very good fair." Said Danny.
"I still don't get why we have to go to a medieval fair on Halloween?" said Shaggy.
"It was either that or spend an entire night in a real haunted house." Said Danny.
"Rood roice." Said Scooby.
"Let's go already, there's lots of things that need to be seen." Said Danny.
"Sure." Said Shaggy.
Danny, Shaggy and Scooby left the mansion as Mike came down stairs in a yellow bath robe.
"Better hit the Jacuzzi, need to feel good." Said Mike.
Mike then heard an explosion coming from the basement.
"What was that?" said Mike.
Mike ran into the basement and saw Donnie working on something.
"No, no, no, no, how is it not working." Said Donnie.
"What's not working?" asked Mike.
Donnie turned and saw Mike.
"I'm trying to get this dimensional portal working, but I can't get it doing the right thing." Said Donnie.
Mike walked over to the controls and inspected them.
"I might be able to get it working." Said Mike.
Mike karate chopped the controls and a portal showed up.
"Hey, no fair. No one can get things to work like that." Said Donnie.
"It was luck. By the way, do you know where Leo is?" said Mike.
"He's at a Halloween party with GDN, Debby, Randy, Theresa and Karai. Why'd you ask?" said Donnie.
"No reason." Said Mike.
"Hey, since this dimensional machine is working, mind testing it out?" said Donnie.
"Sure." Said Mike.
Mike walked into the portal.
"How is it in there?" said Donnie.
All Donnie got was some screaming.
"That bad?" said Donnie.
Donnie looked at the controls and saw the words medieval ages.
"I INVENTED A TIME MACHINE!? That's not good." Said Donnie.
Mike was falling through the portal screaming. He then fell through the other side and fell on the ground unconscious.