A peek into the past.

It was dark and stormy night, deep within a haunted castle down by the seafront, a green troll-like monster destroys a wooden door, where Mystery Inc. is hiding. Everyone escaped but Shaggy and Scooby, they started screaming and they finally escape, but in separate ways. Shaggy is running and screaming all across the hall, eventually locking himself into a room, seeing another door as another way to escape. Shaggy opens the door and the monster is waiting for him.

"ZOINKS!" Shaggy screamed, running to the locked door. The monster comes after Shaggy, as he struggles to open the locked door, only ending up breaking the doorknob. He tosses it in the air and runs off as the doorknob hits the monster on the head.

"Scooby-Doo!" Shaggy shouted. "Where are you?"

The chase goes further on. Shaggy bumps into Scooby. Shaggy got back into his feet, not caring that Scooby was on his back. The monster roars and scares them away. Shaggy sees a suit of armor standing nearby and before they pass through it, he lifts up the arm that carries a shield. It would've worked if the monster didn't smash the arm. Scooby then carries Shaggy in his back and went under the table full of old china and candelabras. Shaggy knocked down every single plate and cup in place before leaping back into Scooby's back. They find themselves in a hallway full of doors, entering each room to room, which causes confusion for the monster.

Suddenly, Fred, Daphne and Velma, stopped running as they accidentally exposed themselves to the monster. The monster picks up a shield from the wall and boomerangs it at the gang. They dodge and run off to the nearest balcony. But the balcony collapses and the girls are on the verge of falling, only to be grabbed hold of by Fred.

The monster comes near Fred, swiped his claw on him, making him lose his grip on Velma, luckily, she grabs Daphne's leg. The monster was about to push them all into the moat until Scooby lands into its arms, causing it to back away, and drop Scooby onto the stairs. Scooby slides around the stairs, not watching the monster go after him. He flies in the air and jumps into a old chandelier, causing it to break to the ground and knocking down a grandfather clock. The clock then knocks down a line of armor suits like dominoes and knocks down the monster.

Shaggy helps Fred lift the girls back up. Shortly after, Velma comes towards the monster and lifts up the mask. The monster was no monster at all, but a man wearing a costume.

"Like," Shaggy gasped. "It's Mr. Beeman, the real estate agent!"

"Mr. Beeman?" Scooby asked.

"Yeah," said Velma. "He was printing millions of counterfeit dollars in a basement with his printing press."

Velma comes near Mr. Beeman, removing his gloves to reveal a dark green inky-substance on his hands.

"What we originally thought was mold," said Velma. "was really green ink."

Everyone stood in awe. Mr. Beeman lets out a small, angry growl.

"I've would've gotten away with it, too, if it weren't for you meddling kids!"

Scooby lets out a small, mischievous chuckle, putting Mr. Beeman's mask on his left paw. He imitates a small roar. Scooby winces in fear, scaring himself.