Twin brother and sister Dipper and Mabel Pines are in for an unexpected adventure when they spend the summer helping their great uncle Stan run a tourist trap in the mysterious town of Gravity Falls, Oregon.
Twins Dipper and Mabel Pines visit their eccentric great-uncle for a summer in Gravity Falls, Oregon, where he operates the world's most bizarre museum. As soon as the twins arrive in Gravity Falls, they discover something amiss in the remote town.
When Dipper and Mabel hear rumors of a sea monster that lives at the bottom of the local lake, they enlist Soos to take them on a boating expedition to prove it really does exist.
When someone tampers with Mabel's life-size wax statue of Grunkle Stan, she and Dipper set out to find the culprit. Meanwhile, Grunkle Stan mourns over the loss of his wax doppelganger.
Dipper and Mabel discover that their seemingly cherubic new neighbor, Lil' Gideon, happens to be the town's adored psychic. But when Lil' Gideon guilts her into dating him, she and Dipper soon learn that his cuteness can fade all too quickly.
In a quest to attain manliness, Dipper ventures into the forest to battle the notorious Multi-Bear. Meanwhile, Mabel tries to teach Grunkle Stan how to be attractive to women, particularly the waitress in the local diner, Lazy Susan.
Stan throws a big weekend party to promote the Mystery Shack. Dipper makes clones of himself to impress Wendy. Mabel fights for the Party Queen title in honor of her two friends.
When Dipper and Mabel discover evidence that the reported town founder is a hoax, they set out to expose the historical cover-up and prove that Mabel's silliness is not a bad thing.
After being challenged to a video game battle by Robbie, Dipper is shocked when his favorite playable fighter, Rumble McSkirmish, comes to life to defend him. But Dipper soon loses control over Rumble McSkirmish and has to find a way to stop him.
Dipper is self-conscious that Mabel is taller than him and seeks a magic solution. Meanwhile Lil' Gideon takes advantage of Dipper's and Mabel's height discrepancy.
Dipper and Mabel go trick-or-treating in the summer and encounter a candy-loving monster who threatens to devour them if they don't bring him sweet things to eat.
When Mabel befriends a cute merman trapped in the public pool, she's determined to help him out. Meanwhile, Dipper decides to volunteer as a lifeguard to see Wendy.
When Mabel discovers that her favorite boy band is actually a bunch of imprisoned clones, she sets them free, only to decide on keeping them for herself. Meanwhile, Dipper is convinced that Robbie plans to brainwash Wendy with a secret message hidden inside one of his songs.
When Waddles is snatched by a prehistoric beast, Dipper, Mabel, Stan, Soos, and Old Man McGucket must journey to a mysterious land trapped in time to rescue him.
Li'l Gideon swindles the Mystery Shack away, forcing Grunkle Stan and the kids to move in with Soos. While Stan weighs how he can still care for his grandniece and nephew, they decide to take on Gideon.
The Pines family is starting to get everything back to normal after the Lil' Gideon incident. They throw a “Mystery Shack Is Back” party, but some unwelcome guests intend to crash it.
Dipper’s secret journal pages lead him and the gang to the author’s hidden bunker where they find themselves face-to-face with a mysterious figure from Gravity Falls’ lore.
After being belittled by Pacifica one too many times, Mabel challenges her to a miniature golf-off which gets a tad out of control when some local residents offer their help.
Mabel decides to put on a sock puppet rock opera to impress a local puppeteer, but her show goes awry when Dipper's drive to uncover more of the journal's secrets leads to a supernatural disaster.
In three separate mysterious tales, Stan is cursed by a Witch, Waddles accidentally eats a bowl of brain-enhancing jelly and builds a machine that allows him to speak, and Mabel faces her fear of claymation.
When Grunkle Stan decides to run for mayor, Dipper and Mabel have their work cut out for them trying to turn their gaffe-prone uncle into the perfect candidate.
A new threat leads Mabel to venture into the enchanted realm of the unicorns. Meanwhile, Dipper learns an unexpected twist about the enigmatic Bill Cipher.
22 min 
