Summerween in Gravity Falls, Oregon.

June 22nd, 198X.

Dipper and Mabel Pines were over at their Great-Uncle Stan’s place for the summer, and last minute they were notified that the town loved Halloween so much they celebrated it twice a year.

“Dipper! We have to have matching costumes again like we always do for Halloween!” Mabel exclaimed as she placed her hands on Dipper’s shoulders and shook him enthusiastically, he had winced and grew a bit dizzy.

“Mabel, calm down!” He protested as he tried getting out of her grip, Mabel soon let go of him and had an apologetic reaction.

“Whoops.. sorry, but c’mon! We have to match as the Wonder Twins! Especially because we are twins!” She exclaimed furthermore, they used to watch this show named “Super Friends” when they were younger.

They were almost 13 at the end of the summer, and they still sorta liked the show. Mabel thought it was the perfect costume for this year. “Sure, uh.. Maybe Grunkle Stan can take us to our local corner store. They should have costumes for us to get.”

“Let’s go ask Grunkle Stan then!” She exclaimed before she grabbed Dipper’s arm and dragged him to go talk to their Grunkle.

At the store

The Pines family went to their local store by the shack, the twins were looking for the costume set of the Wonder Twins while Grunkle Stan went to go find some Halloween decorations to scare people with so he could shoplift it like usual.