Ep 11. Now You Sia, Now You Don't!

In Scooby Doo! And Guess Who? season 1 episode 11, titled "Now You Sia, Now You Don't!", the gang finds themselves in the middle of a mystery when pop star Sia goes missing. The episode begins with the gang hanging out in their van, the Mystery Machine, when they receive a call from Sia's assistant, who's worried that the singer has disappeared. She tells them that Sia was last seen at a charity event where she was set to perform, but before she could take the stage, she vanished.

The gang immediately springs into action and heads to the charity event to start investigating. They meet with the organizers and fans who were at the event, but no one seems to have any clues about what happened to Sia. Velma, the brains of the group, suggests that they split up and search for any clues that might lead them to Sia. Daphne and Fred head backstage to search for any evidence, while Shaggy and Scooby decide to check out the food stands and enjoy some snacks in the process.

While searching through the backstage area, Fred and Daphne come across a mysterious room filled with beautiful costumes and props. As they start to investigate, they hear strange noises and begin to suspect that someone else is in the room with them. Meanwhile, Shaggy and Scooby are enjoying all the delicious food at the charity event when they see a familiar face – former mystery-solving partner and pop star, Miley Cyrus. Miley joins Shaggy and Scooby in their food quest and tells them that she has information that might help them find Sia.

As the gang continues their investigation, they start to uncover a series of clues that suggest that Sia may have been kidnapped. They find a note left behind at the charity event that seems to be a ransom letter, and they also discover that Sia's dressing room had been ransacked. With each clue, the gang gets closer and closer to solving the mystery of Sia's disappearance.

Just when they think they're close to cracking the case, the gang encounters unexpected obstacles. They receive a tip that leads them to a deserted warehouse, but when they arrive, they're met with a team of security guards who refuse to let them in. Undeterred, Daphne and Fred come up with a plan to distract the guards while Velma and the others sneak inside.

As they explore the warehouse, the gang discovers that it's actually a recording studio. They start to suspect that Sia may have been kidnapped so that her incredible singing voice could be used for someone else's benefit. With this new revelation, the gang works even harder to find Sia and free her from her captors.

In the end, the gang comes face to face with their suspects and discovers the truth about Sia's disappearance. As always, they use their smarts and bravery to solve the mystery, and Sia is saved from her captors. The episode ends with Sia performing at the charity event, much to the delight of her fans and the gang. "Now You Sia, Now You Don't!" is a thrilling installment in the Scooby Doo! And Guess Who? series, full of suspense and surprise twists that will keep viewers on the edge of their seats.