Gravity Falls (Demigod AU)

Join Dipper and Mabel in the Mystery Shack (even though it is a boat) to prevent Bill Cipher from-

"Wait right there Ms. Author!"

"What the-"

"I'm gonna tell the story here!"

"But-"

"Buts are for the behind! I am gonna take control!"

"Hey there! Mabel here! We are going on a trip! In our favourite rocket ship! Zooming-"

"Mabel, be serious!"

"Fine dip n' dots! Okay so we are going on adventure to prevent this God/Demon from awakening! It will be totally exciting and dangerous!"

"I sometimes wonder how you are the daughter of Jupiter."

"Shut up, Seaweed Brain! So yeah bye!"

Well they are gone so read the story if you want to find out what happens. It is Heroes of Olympus but I sort of changed the story and plot but it still has the main idea.

DISCLAIMER:

The picture above is not mine it belongs to its respective owner.

Gravity Falls is not mine it belong to Alex Hirsh.

Heroes of Olympus is also not mine ot belongs to Rick Riordan.