Dipper and Mabel's summer vacation gets even weirder as they discover more Gravity Falls mysteries. A secret video-game code brings Dipper's favorite video game character, Rumble McSkirmish, to life for an epic battle with Robbie; a magical crystal alters the twins' heights with near-disastrous consequences; and on Summerween, the pair come face to face with the mysterious Summerween Trickster. Volume 4 of Gravity Falls Graphic Adventures retells episodes 10-11 of season 1: Fight Fighters, Little Dipper and Summerween.
