Dipper and Mabel Pines arrive in the remote town of Gravity Falls, Oregon to live with their Great Uncle Stan "Grunkle Stan" over the summer at his 'tourist trap', the Mystery Shack. Mabel and Dipper make aquantinces with Wendy and Soos.

As he begins to settle in,Dipper starts to discover the town's paranormal side when he discovers a mysterious book labeled '2' detailing strange occurrences that have happened in Gravity Falls.