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|Synopsis= Sam and Dean are in a fight with a stuffed green dinosaur in a shop. They pour holy oil on it and ignite it. It explodes with batting all over the room. A man appears from behind the counter. He was hiding and was very pleased at what they had done. He is Alan the pawn shop owner. In walks a business owner Jay, who is skeptical. Alan offers the Winchesters whatever they want in the store. Dean took the flatscreen TV. Jay hold the door for them as they leave, Back at the compound, Sam is researching for what they just fought. Dean excitedly asks Sam to come with him. He has something to show him. He has assembled a Dean-cave. Games, juke box, and a bar. Two lazy boys and the TV. Dean points the remote at the TV, it lights up purple. A beam of purple light pulls them into the TV. Now it is animated. They can't believe they are animated. Dean slaps Sam to see if it is real. They are cartoons now. The Impala is there beside them. Dean sees it as a case and they drive away. They stop at a malt shop, pull in and park. They see a van. It is not just any van but the The Mystery Machine from the Scooby Doo cartoon. They enter the malt shop only to see the Scooby gang dancing at a juke box. Dean named them all off. Fred, Shaggy, Daphne Velma and Scooby. The gang sits, Dean introduce themselves and ask if they could sit with them. Fred agrees and they sit down. Dean kisses Daphne's hand. She is his crush. The gang is talking about a Colonel Saunders has left Scooby in his will and he has to be there for the reading. Scooby had saved his life in a fish pond. And the Colonel was grateful. Dean asks if he and Sam could tag along. They were okay with that. Shaggy, Scooby and Dean have a very large sandwich before they leave. Parked at a traffic light. The Mystery Machine and the Impala side by side. Dean wants to race him and thinks the van is too slow. Fred driving leaves the Impala in the dusts. Dean is mad and spins his tires. And they are gone. A figure in a long coat appears. They are all at a mansion. Dean realizes the episode they are in. A Night Of Fright Is No Delight. He is excited. He's seen it a million times. The attorney introduces himself and points out those who are in the will. He plays a vinyl record that the colonel had left his last wishes on. The instructions are that all had to stay the night in the mansion to inherit the million dollars. He mentions the mansion is haunted. Who ever was left in the morning would inherit the money. The attorney leaves with an evil long laugh. They all settle in for the night. The girls in there room and the men in there. Daphne rejected Deans request to share a room. Fred, Shaggy, Scooby, Sam and Dean are in there room. Dean is wearing a long night shirt with a cap. Sam questions him wearing it. In the meantime the girls are talking about Dean and Sam. While they all relax in the hallway is a ghost with glowing eyes and chains. An heir is attacked from behind with a knife. Dean is about to eat his sandwich when they all hear a scream. All run down stairs to a room where in a bed a man was stabbed and died in his bed. They all decide to look for evidence and Velma takes over the investigation. She again says she doesn't believe in ghosts. From the large window a shadow of a man is seen. He enters the room via the window, it is Castiel. Dean introduces him to all of them as his friend. Cas begins to tell his story of how he got there. In real life he is seen coming down the stairs with a bag of fruit from the tree of life. No one responds to his calls. He winds up in the Dean-cave, where he sees the TV. He sees Sam and Dean on TV as cartoons. A purple energy pulls him into the television. He appears as the Impala speeds up the road. The lights begin to flicker. Doors slam in the hallway. A ghost appears Fred runs to it, he just passes through it. The ghost leaves claw marks on the wall Scooby is in Shaggy's arms and Shaggy is in Cas's arms. Fred finds a door and opens it. A body is inside in pieces. It is gruesome. Fred thinks they should spread out and search for clues. They all pair off. Of course Dean is with Daphne and Fred. Sam and Velma search the attic. He gets spooked by a mannequin. Sam tells her about ghosts, demons and monsters. She is amused by it. She has a crush on Sam. They come to a chest full of toys and ectoplasm. Suddenly, the toys begin to hurl at them. They leave quickly. Fred, Dean and Daphne are in the library looking for clues. Dean sees a yellow book that is out of place. He pulls it out and the trap door opens, they fall into the basement. The room is dark. Fred turns on the light and they see the ghost. Shaggy, Cas and Scooby are walking in the mansion, the ghost is behind them. They see it and run. Cas confronts it, there are purple sparks. The Scooby Doo theme song plays at this point as the characters all run away from the ghost. They pop out of urns, where Deans tries to steal a kiss from Daphne. After they crash into one another, they back into a room. Velma again takes over and declares she does not believe in ghosts. She see her breath, her glasses get icy as does all the glass in the room. The ghost enters the room in darkness. Fred runs toward it and is thrown to the wall. Daphne and Velma are levitated in the air. Shaggy is thrown out the window, where he is holding on to a pole outside. He falls Scooby grabs him and Cas grabs his tail. They fall to the ground. Shaggy has broken his arm. Velma puts a splint on his arm and Daphne uses Fred's ascot for a sling. Dean tells them that ghosts are real. They have a hard time believing that. They're very upset. So Dean mentions their accomplishments from other episodes. This helps them calm down. Dean and Sam are in the cars trunk getting weapons for their fight. Scooby and Shaggy set up an elaborate trap, with coconuts, iron chains and a washing machine. The ghosts comes in and it goes all wrong. The three of them get caught up in the trap. Plan B is to get it into the library. The ghost falls into the basement in a circle of salt. He can't get out. Then it turns into a little boy. The boy tells of a bad man, Jay, who had tied him to his dads pin knife and was making him hurt people.