However they were too late in stopping GBF Jr. Rigby was defeated and then found by his friends from the Park who then find out what happened and then join Rigby in facing the bad guys and saving Gravity Falls with allies Skips summons to help fight the baddies. summons his allies whom are the antagonists, monsters and aliens Dipper, Rigby and Craig had faced during their quest to return to the Falls. with all their friends to prevent him from his plan, but GBF Jr. with Stanley, Mabel, Wendy, Soos and then they fight GBF Jr. The Gang makes it to Gravity Falls as they confront GBF Jr. A Nightmare Alien named Carl then gives the boss something as Anti-Pop's Army bows to the boss with Alephs screaming in fury for blood. Anti-Pops is pleased and then tells his 'boss behind the chair' that the plan is going well. then spiritually warps to meet Anti-Pops to report the current situation on getting the Scepter. and his brainwashed Employees whom are Gene, Bud Gleeful and Gideon Gleeful with their followers whom are brainwashed by him and his thugs. Meanwhile, in Gravity Falls a giant Portal is being created by Garrett Bobby Ferguson, Jr. They run into various thugs and antagonists such as Howard Fightington, Zombies, The Night Owl, The Urge, Giant Susan, Broseph Chillaxton, The Master Prank Caller, Game Store Manager, Party Pete, Stag-Man, Destroyer of Worlds, No Rules Man, Summertime Song, Hammer, Blonde Men, Hot Dogs, Duck Collector, Skull Punch, the Capicola Gang, Quillgin, The Warlock and many more antagonists, monsters and aliens. The Guys then decided to head towards this Gravity Falls town and save it from the Contractor before he completes his plan. Rigby and Craig fight the two and run off as the FBI find the thugs. Dipper then gets out a book called the Journal which attracts attention from Tyson and Ronnie Slithers with some thug friends whom claim they were hired by 'The Contractor' to capture Dipper and expose the Journal to him. Rigby and Craig camp out at an old Hotel until they meet Diper Pines a kid who was thought to be dead during the destruction of the Mystery Shack and his death resulting in a plan to destroy Gravity Falls to create a 'Interstate' in place of the town.
Then the guy begins to speak with Anti-Pops who then says get the Scepter of Doom from the Ancients and use it to summon hordes of evil Robot Aliens called Alephs, The Antagonist reveals himself as Garrett Bobby Ferguson, Jr. He follows the two guys to New Jersey as he hears Rigby talk about how the Park Sucks and he begins to obliterate the park until he accidentally obliterated the Mystery Shack, but then smiles about it. Meanwhile at the Park a mysterious dude laughs knowing his plan is complete.
Then a Snake named Craig joins him on his quest as they journey to New Jersey. Rigby quits working for the Park and attempts to move to New Jersey to start a new life after causing Mayhem for the Park that they did not want.