This is an extended version of the story Central American Falls. I added more parts in some of it and in others I removed it.

It has been 3 years since Mabel and Dipper left Gravity Falls. When they come back, it was not how it turned out to be. It was full of darkness so a clever girl named Kat and her cat help them to fight against all evil especially against Raven and Bill Cipher. Rated T for some swearing and violence