Soon after getting the things for the plan the group quickly sets there plan up.
"We use the pulleys to tip over the fad." Fred says.
"Then Daphne will open the air vents from the outside and release the disco skull." Velma says.
"The light will reflect off the skull." Fred says.
"The creatures will explode, I'll find Scoob, and we'll have like saved the world." Shaggy says.
"What can we do?" Alexis asks.
"You guys wait somewhere out of sight until I give the signal to jump in." Velma says.
"Ok." Alexis says as they then notice that people are nearing where they are.
"Oh no. The rituals beginning." Fred says.
"Quick Shaggy attach us to the fad." Velma says as she tosses down another rope to Shaggy.
"Shaggy faster." Velma says as Shaggy tries to hurry.
"All systems go." Shaggy says as he then releases he is attached to the fad.
"Mystery Inc. rides again." Fred says as he and Velma ride down on there rope causing Shaggy's rope to make him hit the ceiling and make Daphne safety hook break off and her hit the side of the wall and then Shaggy go flying into a guard. Alexis, Space man, Cat man, Star child, and Demon then go wait out of site so they can jump in when the real fight begins. As people come in and things get started Alexis sees N' Goo Tuana take the damon ritus back from Fred and Velma and see Mondavarious and Scooby soon being carried out on some kind of chair as Shaggy tries talking to him. As Scooby and Shaggy are about to take off running Scooby then has his protoplasm taking from him by a pincer. Mondavarious then attaches the damon ritus to his chest and starts absorbing people's protoplasm.
"The moment is at hand. Ruler of the damon ritus I shall absorb the energy source. And now to complete the transformation I shall absorb the pure one." Mondavarious says.
"Scoob." Shaggy says scared.
"Should we jump in now?" Demon asks.
"No wait for Velma to give the signal first." Alexis says.
"Infinite power shall be mine." Mondavarious says.
"Nobody absorbs my pal." Shaggy says as he jumps onto the pincer and swings into Mondavarious knocking him onto his back and stopping him from absorbing Scooby and the rest of the peoples protoplasm. Scooby's protoplasm is then returned to him as Fred and Velma then go for the damon ritus as they both then notice that Mondavarious isn't real he has a mask.
"Hey look Velms a man in a mask." Fred says as he then removes the mask but it turns out to be a mask on a robot as the damon ritus then shrinks and Scrappy Doo is then revealed to be inside Mondavarious.
"Da da da da puppy power! I've out smarted you-" Scrappy says as he then gets cut off by being shocked by electrical cords from the robot.
"Scrappy Doo." Velma says.