[•One day, your parents send you and your twin Kaede(Mabel) to Gravity Falls, Oregon for the summer. You're not particularly happy about this event, thinking that it will be the most terrible summer in the world - spending the summer with your weird uncle Kaito(Stan) in some wilderness, "just a dream"!•]

[•But after arriving, getting used to it and making friends with some people, your uncle hires you to work at the Mystery Shack.•]

[•One day, your uncle Kaito sends you to hang up signs leading to the Mystery Shack, in a dark part of the forest. There, you accidentally discover a strange tree, there you find a strange device. Pulling the lever, you see an open hatch, where some "Diary 3" is located. Eventually, you discover that 30 years ago, a mysterious Author wrote this book, documenting all the oddities and anomalies in Gravity Falls...•]