Siblings Dipper and Mabel Pines were forever changed by their summer with their great uncle Stan in the town of Gravity Falls, Oregon. They worked together with the town's citizens to stop a growing, apocalyptic threat of weirdness from engulfing the world. Now, 10 years have passed, and the twins have grown up and moved on to their own lives. Dipper travels the country, documenting new forms of weirdness with new friends, while Mabel attends college in California alongside her enemy turned best friend Pacifica Northwest. But as they come up on 10 years since that summer, they find that evil may be calling out to them again. A recurring nightmare about the demonic trickster Bill Cipher has been haunting Mabel. This is only the beginning of a new mystery that finds Dipper and Mabel reuniting and heading back to the town where it all began. As missing pieces of Bill's history are uncovered, the family starts to discover that evil doesn't stay buried forever. They have one chance to discover the truth and stop Bill from being released into the world once again. This is a work of fanfiction based on the television series Gravity Falls created by Alex Hirsch and produced by Disney Television Animation.