It's been four years and Dipper Pines still haven't been found. Everyone believe that he got lost in the forest and die. Now Mabel is back in Gravity Falls, age 16, and is in search of her lost brother. With only a few friends by her side that believe her that Dipper is still alive and out there, Mabel races around to find him. Will Mabel find Dipper or is Dipper really dead? Is it already to late? Is Dipper really on THIS world? Will Dipper ever be the same?