The next morning, Mabel and her friends arrived at the Mystery Shack. "You have to see this place," Pacifica said. "It's so cheap and the owner is so money hungry. It's so bad it's hilarious."
"This is better be good," Ebonie said. "If not, I'm not coming back next summer."
That's when a bus parked. "Agh, it's from some dumb summer camp," Winter groaned. "That means there's going to be little brats ruining around."
Dipper climbed off the bus. "You've got to be kidding me?" Dipper said when he saw the girls. "I'm going to have to be putting up with you guys all summer long."
"What are you doing here, fish face?" Mabel asked, in an annoyed tone. "Did you even take a shower? I can still smell the dead fish on you."
"I did, three times," Dipper said. "My summer camp was moved here this year. Something about not being able to afford the campgrounds anymore."
"Whatever just stay out of our way," Ebonie said. An old man walked onto the porch. He was wearing a tuxedo and a red hat.
"Welcome to the temple of mystery and wonder," Stanely said. "Inside are horrors you can find no one else in the world. A shack of unseen beast not for the faint of heart. Ladies and gentlemen, welcome to the mystery shack!"
They then go inside. "Who was that boy you were talking to?" Pacifica whispered to Mabel.
"That's just Dipper," Mabel said. "He's a loser, totally not worth your time."
"He's kind of cute," Pacifica said.
"Gross," Mabel stated. They continue to look at the obviously fake attractions. Mabel then whispered to Winter. "I'll be back. I'm going to find the bathroom."
Mabel then started looking for the bathroom. She found one that was very gross. Mabel almost threw up as she closed the door. "Of course this cheap place would only do the bare minimum," Mabel murmured.
She then climbed up some stairs, hoping to find a cleaner bathroom. She turned on her phone's flashlight as she looked around. She accidentally flashed her light on Dipper. "What are you doing up her dweeb?" Mabel asked.
"I was looking for the bathroom," Dipper answered.
"Same here," Mabel said. They then continue looking around for the bathroom. They accidentally stumbled upon Stanely's bedroom. He saw a picture of two baby twins. Under it was the words "Great niece and nephew."
"Hold on," Dipper said, pulling out his phone. He pulled up a picture of him as a baby. "That's me as a baby."
Mabel pulled up a photo of her as a baby. "And I'm the other one," Mabel said. The two kids then looked at her. "Were you adopted as a child?"
"Yeah," Dipper said. "I was left on the doorstep of an orphanage when I was a few hours old. They were never able to find who left me there."
"Dipper," Mabel said. "I think you're my brother. Twin brother."