Forgotten Falls. (Gravity Falls AU) {Complete}

"Humans are dangerous and cruel. They'll hurt you Pine-Tree. I'm the only one you can trust." - Bill Mabel and Dipper Pines. The two mystery twins are sent to live there with their Great Uncle Stan at the young age of 1 after their parents perished. It was all fine until the kids turn 5 and Dipper is kidnapped and has...