"Sonar's up and running. Everything is clear outside the cove. We're standing by over." Daphne says through the walkie talkie as she, Alexis, and Shannon are with Ian and his crew on their ship.
"Sir Ian you better come take a look at this." Alexis says seeing the monster show up on the sonar.
"There it is again. It's heading right into the cove." Shannon says.
"Good gravy." Ian says seeing the monster on the sonar.
"I'll call Velma." Daphne says as she reaches for the walkie talkie but Mcintyre takes it from her.
"Let's not be hasty." Mcintyre says as the crew grabs Alexis and the others.
"Mcintyre what's going on!? You can't do this! this is mutiny!" Ian shouts angrily.
"Forgive me sir Ian. But I've come up with a little plan of my own. I intend to capture that creature and sell it for quite a handsome amount of cash." Mcintyre says greedily.
"Catch it? How are you going to catch it?" Alexis asks.
"The old fashion way." Mcintyre says causing Alexis to look at him in fear knowing if the creature is real it will die from his way of trying to catch it. the group are then taken outside to watch as the crew loads a harpoon.
"Watch out Freddy he's got a harpoon!" Daphne shouts seeing Fred on the dock.
"Target in range!" One of the crew members shouts as he aims the harpoon at the monster.
"Excellent." Mcintyre says as the girls then look at each other and smile before smash their foot into their holders foot and running over to a line sliding down it with Daphne's purse strap knocking into the harpoon as it fires into the wall of Blake castle. The crew members then bail from the boat knocking Ian into the water as the girls stay on the boat while it stops in the rocks.
"Help!" Ian shouts as he is splashing around in the water.
"Sir Ian." Cat man says.
"Throw me a line! I can't swim!" Ian shouts.
"We've got to do something." Shannon says as Daphne goes over and starts lowering the magnet.
"Hang on sir Ian help is on the way." Fred says as dale pushes his monster hood ornament to sir Ian to help him stay above water as the monster appears before then getting caught in the magnet.
"Whoever heard of a magnet stopping a sea monster." Shannon says as they then hear a scream and see another sea monster chasing Scooby and Shaggy before they then fall into their trap on land as the monster goes over to where they fell in.
"Oh no!" Alexis shouts before steering the magnet knocking the monster into the other making it go down into the hole with Shaggy and Scooby. The group then see the land monster was the Haggart brothers as Alexis drop the sea monster on the ground revealing a metal body under the skin. As the group go over to the sea monster they see a hatch open and see Professor Pembrooke.
"Professor Fiona Pembrooke?" The group ask in union.
*Timeskip*
"It's all very simple. Professor Pembrooke has been behind this all along." Velma says.
"She did a good job. Scoob and I have been scared all along." Shaggy says as he holds Scooby.
"The locked board we found on her vessel was actually a secret passage way." Velma says.
"It led to her homemade monster submarine she kept docked beneath her boat." Star child says.
"She'd simply climb down the hatch and pedal off into the Loch." Alexis says.
"That way she could be free to do her scaring while we all thought she was on the boat." Daphne says.
"But it wasn't Shannon she was after or any of us. It was really sir Ian's attention she wanted." Velma says looking at Ian.
"Me? What do I have to do with any of this?" Ian asks.
"She was using fake monsters to get you to believe in a real one." Cat man says.
"Exactly. She wanted you to become a Nessie true believer yourself but she couldn't count on Nessie making an appearance. So she created her own." Velma says as Fiona gives a guilty look.
"And she hired Angus and Colin to help her." Daphne says.
"Your sons were trying to scar away the athletes so they could win the games." Demon says.
"It's not true." Colin says.
"We don't even care about the games we just like a good practical joke." Angus says.
"That monster joke is the greatest joke we ever pulled." Colin says happily.
"Aye. Lots better than the hedgehog in the toilet bowl." Angus says happily as he and his brother laugh.
"I should of prayed harder for daughters." Mr Haggart says ashamed of his sons.
"It's true. Ian would of never looked at my new photos unless he came to believe in the beast." Fiona says sadly.
"She had to find a way to convince him and the Highland games at Blake castle offered her the perfect opportunity." Velma says.