Chapter 1

Dean and Sam Winchester are hunters that travel around the country hunting monsters, saving people, the family business.
Dipper and Mabel Pines are Paranormal Investigators. Very young ones to, at the age of 18. They travel around the country to find the paranormal and learn more about them so that they can defeat them. But at the end of the day, They always go back home to Gravity Falls.

One day a mysterious monster goes on a rampage and attacks people in the little town of Gravity Falls. So what will happen when these two families meet?

((My Oc's Yun Novak Winchester and Selene Cipher will be in here... no hating on my fanfic. Don't like? THEN DON'T READ!!!!!))