For their summer vacation, 12-year-old twins Dipper and Mabel Pines are dropped off from their home in Piedmont, California to the fictitious town of Gravity Falls, Roadkill County, Oregon to live with their Great Uncle Stan Pines (often shortened to Grunkle Stan), who runs a tourist trap called Mystery Shack. Things are not what they seem in this small town, and with the help of a mysterious journal that Dipper finds in the forest, they begin unraveling the local mysteries. With appearances from Wendy Corduroy, Mystery Shack cashier; Soos Ramirez, friend of Dipper and Mabel and handyman to Grunkle Stan; plus an assortment of other characters, Dipper and Mabel always have an intriguing day to look forward to.

Twin siblings Dipper and Mabel Pines spend the summer at their uncle's tourist trap in the enigmatic town of Gravity Falls. When Dipper and Mabel Pines get sent to their great-uncle Stan's shop in Gravity Falls, Oregon for the summer, they think it will be boring. But when Dipper find a strange journal in the woods, they learn about some strange secrets about the town. Welcome to Gravity Falls. Just north of Normal, west of Weird.