The summer holidays are getting weirder for Dipper and Mabel at Gravity Falls. Lil Gideon wants to take over the Mystery Shack! But first, he must get the deed from Stan’s safe; and to steal its code, he seeks the force of a multidimensional being: Bill Cypher. Now, Dipper, Mabel and Soos must prevent Bill from finding the code, and therefore, enter one of the weirdest places in Gravity Falls: Grunkle Stan’s mind. Will they be able to defeat Lil Gideon? Volume 7 of Gravity Falls Graphic Adventures retells episodes 19–20 of season 1: Dreamscapers and Gideon Rises.