**Title: "Shaggy, Scooby, and the Case of the Diabolical Disco Shark"** [INTRO SCENE] The Mystery Machine is bouncing along a picturesque coastal road. Waves crash melodramatically against the shore, while seagulls screech overhead like lost souls. Inside, Scooby is drooling on a giant sandwich, and Shaggy is debating the philosophical implications of anchovies as a pizza topping. **Fred (driving):** You know, gang, this coastal drive is really groovy. Nothing but miles of sand, sea, and-- **Daphne (interrupting):** --And Sonny and Cher stranded by the roadside! Look! **Velma (pushing up glasses):** Jinkies! What are the odds? Cut to Sonny and Cher, surprisingly vibrant for a stranded duo, attempting to flag down a ride while harmonizing a distress signal. **Sonny:** I got you, babe... to STOP! **Cher:** If I could turn back time, I'd tell our travel agent to book a better hotel... The Mystery Machine pulls over. Shaggy opens the door with a grandiose flourish. **Shaggy:** Like, need a lift, man? CUT TO: [INT - MYSTERY MACHINE - MOMENTS LATER] The gang, including Sonny and Cher, are now crammed inside the Mystery Machine. Disco balls and bell-bottoms everywhere. The atmosphere is buzzing with the anticipation of mystery--or perhaps it's just Cher's hairspray infusing the air. **Cher:** So, our agent booked us this "quaint" hotel. Owned by the alleged ghost of a shark god--Pescado Diabolico. **Velma (intrigued):** A haunted hotel with ties to a shark god myth? That sounds like a mystery to me! **Fred:** Let's split up and look for clues. **Scooby:** Ruh-roh. CUT TO: [EXT - DILAPIDATED HOTEL - DAY] The hotel looks like the love child of a haunted house and a tacky aquarium. The gang and the pop duo approach with caution. The sign out front blinks "VacanSEA Rooms"--two letters short of being reassuring. **Shaggy (quaking):** Like, maybe the shark god prefers room service? CUT TO: [INT - HOTEL LOBBY - MOMENTS LATER] The lobby is adorned in seaweed and what might be shark teeth--or very aggressive confetti. The concierge is a suspiciously buff octopus in a bellhop uniform. **Concierge (with a French accent):** Welcome, to Le Hotel Pescado Diabolico. Let's make your stay... unforgettable. **Sonny (whispering to Cher):** Well, it's got character. CUT TO: [THE INVESTIGATION] Scooby and Shaggy are on snack duty/procrastination while the rest explore. They wander into the kitchen and find a ghostly figure chopping onions with a fin. Scooby and Shaggy scream, commencing a chase scene through the hotel, powered by a funky disco track featuring Sonny and Cher. A venture through secret passages reveals that the "shark god" is actually the hotel manager in a clever costume, trying to scare away guests so he can transform the hotel into an underwater-themed disco nightclub. **Hotel Manager (unmasked):** And I would've gotten away with it too, if it weren't for you meddling kids and those disco divas! **Sonny (grinning):** Looks like we've got the beat. **Cher (flipping hair):** And snap out of that ghost character! CUT TO: [ENDING SCENE - OUTSIDE HOTEL] The real Pescado Diabolico turns out to be an endangered fish species the hotel was built over. With the scam uncovered, the gang, Sonny, and Cher team up for a benefit concert to save the Pescado Diabolico's habitat, featuring a Scooby and Shaggy snack buffet. **Fred:** Another mystery solved, gang. **Scooby (with a mouth full of snacks):** Reah! Rystery Rolved! **Cher (to camera):** And remember, folks, the beat goes on, but let's keep it real for the fishies. **Shaggy:** Like, that's deep, Cher. The scene freezes with everyone laughing, Scooby in the foreground, with a caption: "Stay Groovy, and Remember to Save the Fishies!" [ROLL CREDITS over the sound of "I Got You Babe" remixed with Scooby-Doo's theme.]