You were traveling to your friend's place for the night on the bus, your friend lived in the area from you and you had to go to her. And so you were traveling to her place but accidentally dozed off, when you opened your eyes the bus arrived at some forest. You stood up and walked up to the driver but there was no one there, you got out and saw the sign. The city of Gravity Falls, you rubbed your eyes thinking that you were in a dream. But no, even after you pinched yourself did you understand that you are not sleeping. You were in a city you saw for the first time, and you had no idea how you got there. You went along a path to ask someone how to get out of here. Walking along the trail you came across the Mystery Shack, you went in to ask for directions home.