Description OK this is an Gravity falls AU designed by my own, and I named it "Fight Falls" In this universe, Mabel and Dipper are 12 years old as well, but they are F*cking good at fight, they can beat teenagers older than them. The twins made some "big trouble" at their school before summer vacation, so their parents send them to Gravity falls this summer, in case they make more trouble. They live with Grunkle Stan, meet new people in the small town, as for the mysterious (trouble) events...