The Apocalyptic Twins

"When we were 12, my sister and I saved Gravity Falls from an insanely evil triangle named Bill Cipher. We thought he had ended everything that summer.... We were wrong. Now, six years later, Bill is back and is bigger and stronger than ever when he turns the world into an apocalyptic nightmare.  Now it's up to me and my sister to fight the odds as we travel around the world, following the clues and trying to stop Bill from ending it all. We stopped him once, we can do it again. Only this time, Gravity falls isn't the only thing at steak."

So this is something I've been wanting to work on lately. What if when the twins got older, Bill returned and basically sent everything to shit and the only people who could really stop it, is the old mysteries twins! In order to stop Bill and all the monsters that he's set loose on the human population, Dipper and Mabel have to go travel around the world solve the mysteries that'll lead them to defeating Bill once and for all. They get the gang back together and together they travel around and do what they would normally do.

I really wanna continue doing this so we'll see how things turn out!