Finn, Willa and Ron were flying in front of another projection dome. The projection made it feel like the ride vehicle was flying through the Quidditch Pitch with Harry and Malfoy, playing alongside of them. Willa was beaming at the screen, while Finn and Ron were more grim about it. Then, Willa realized it, too.
The projection showed Malfoy bumping into Harry, who was trying to find the Golden Snitch, and then flying over to Ron, who was tending to the goal. A goal accidently got past him on the screen and a bell rung. That's when they all saw what they knew was coming. Dementors. Hundreds of them, spiriling down from the skies in the projection. "Willa," Ron says. "Do you happen to know a Patronous Charm?" Willa gave Ron a cold stare speaking 100 miles per hour.
"Didn't you learn it in the Dumbledore's Army?"
"I wasn't really good at it."
"Focus on something happy."
Then the ride took a sharp fall into the hole which lead to the Chamber of Secrets. They flew around a corner and a real dementor popped up. Ron shouted the charm. "EXPECTO PATRONUM!" A small beam of light began to emerge from Ron's wand, then went out. The dementor flew up closer to the car and began sucking their souls out. Starting with Finn