It was nighttime at Terror Land Amusement Park and the owner was locking up for the night.
Suddenly he heard footsteps.
"Uhh hello? The park is close." The owner said.
Suddenly out of nowhere a large Frakenstien monster appeared glowing green and had a evil look on its face.
The Owner screamed as he ran for the exit.
The next day Mystery inc were at their hangout spot The Barbara Burger waiting for daphne.
"Like where's daphne?" Shaggy asked.
"Probably got distracted by a shoe sale again." Velma said.
"Americans and fashion." Mitsu said.
"Oh like you and your cat accessories back home?" Jade ask mitsu.
"Touché." Mitsu said.
Suddenly Daphne arrived with a 12 year old girl with red hair wearing a purple t shirt and a violet skirt.
"Sorry im late gang i had to bring my sister Telula with me." Daphne said.
"Hi." Telula said.
Velma's phone rang and she answered it.
"Mystery Incorporated Velma speaking." Velma said "Ok we'll take the case. Gang we got anotheg mystery."
"Can I come? I've always wanted to join you guys on a mystery." Telula said.
"Sure but stay close to one of us." Daphne said.
Later at sunset the group arrived at Terror Land amusement park.
"Like just our luck,The mystery is at our least favorite place in town." Shaggy said.
"Uh huh." Scooby said.
The gang is soon greeted by the park's owner.
"Welcome Mystery inc to Terror Land." The owner said.
"Can you tell us what happened sir?" Fred asked.
"Well i was just closing up last night when all of a sudden the Frankenstein animatronic came to life. Im worried that the other animatronics will do the same and I'll be forced to close down the park." The owner said.
"Dont worry we'll get to the bottom of this mystery." Velma said.
"Thank you. Good luck and help yourselves to anything at the concession bar." The owner said as he left.
"Ok gang let's split up and look for clues. Shaggy daphne and velma and I will check the house of mirrors while jade scooby mitsu and Telula check the rides." Fred said.
"Oh boy." Mitsu said annoyed.
Fred Daphne Velma and Shaggy were in the hall of mirrors searching for clues.
"these mirrors look off." Daphne said looking at one.
"There funhouse mirrors daphne." Velma said.
"At least they're not scary." Shaggy said.
Suddenly the four saw a odd reflection of themselves.
(Note its their Velma series designs)
Fred shivers at the sight.
"Now thats scary." Fred said.
"Like glad we don't look like that." Shaggy said.
As the four teens walked away they were unaware of the werewolf following them.
Meanwhile Scooby Telula Jade and Mitsu were investigating the rollercoaster.
"Nothing in here." Telula said in one of the cars of the rollercoaster.
"Let's keep looking." Jade said.
Suddenly the rollercoaster started with Scooby Telula and Mitsu inside the cars.
"AHHHH!" The three screamed.
Jade tried to turn the ride off but couldn't.
Soon the rest of Mystery inc arrived at the scene.
"Whats going on?" Daphne said seeing her sister in the rollercoaster.
"Something must be making the ride malfunction." Jade explained.
"Somebody do something!" Shaggy said in a panic.
Suddenly a masked blonde woman wearing all purple appeared and managed to stop the ride.
"The Purple Finch Coolsville's vigilante protector." Velma said as Scooby Telula and mitsu got out of the coaster.
"Telula are you ok?" Daphne asked her sister.
"Yeah just a little nauseous." Telula said a bit dizzy.
Velma noticed a Computer chip in one of the cars.
"Fascinating." Velma said as she noticed the Purple Finch vanish "Drat she always does that."
Velma looked at the computer chip carefully.
"It appears that this computer chip came from a controller of some kind." Velma.
"Do you think it's from the same controller that could be controlling the animatronics?" Jade asked.
"Possibly." Velma said.
"Uhh guys." Telula said nervously.
The gang saw the Frankenstein animatronic along with a werewolf and Vampire animatronic.
"RUN!!!" Fred said.
The gang and Telula started to run around the park while being chased by the animatronics.
Soon the gang split up and so did the animatronics.
The werewolf animatronic searched for scooby snd shaggy.
Scooby and Shaggy approached the animatronic dressed as barbers.
"Goodday sir you could use a trim." Shaggy said.
the werewolf animatronic was placed in a chair.
"A Little off the top." Shaggy said as he started trimming.
The werewolf animatronic got angry.
The chase resumed until the gang managed to hide from the animatronics.
"Ok gang these animatronics must be controlled by someone." Fred said.
"But how?" Jade asked.
"I think i may have a idea." Velma said.
"Gang it's time for the trap." Fred said.
Later the three animatronics are searching for the gang when they noticed a x at the center of the park and approached it.
Suddenly a large magnet appeared and caused the animatronics to go haywire and shut down.
"It worked." Telula said.
Soon the police and the terror land owner arrived.
"Excellent work kids." The owner said.
"Thanks. Now to reveal the one controlling these animatronics." Velma said as everyone followed her to the maintenance building.
Telula opened the door and everyone saw a man with black hair wearing a maintenance uniform and was carrying a controller.
"Tom Miller the maintenance guy. After hearing that he was going to be fired he orchestrated the animatronics to scare off anyone who enter the park forcing it to shut down." Velma said.
"And I've would've gotten away with it if it weren't for you meddling kids you're dog and the meddlers from Japan." Tom said as he was taken away.
"That was amazing!" Telula said in excitement.
"You know Telula next time you want to join us on a mystery feel free to ask." Daphne said.
Telula hugged Daphne who hugged her back.
Meanwhile The Purple Finch looked at the gang from the distance and smiled.