The Pines Family resolves to get back to normal by throwing a "Mystery Shack is Back" party ... but nothing is normal in Gravity Falls!

When Dipper's secret journal pages lead him and the gang to the author's hidden bunker, they find themselves coming face to face with a mysterious figure from Gravity Falls' history.

After being belittled by Pacifica too many times, Mabel challenges her to a miniature golf off, which gets out of control when some local residents offer their help.

Close to unlocking the author's laptop, Dipper is visited by the demon Bill, who wants to make a deal. Mabel puts on a puppet show to impress a boy.

Soos makes a promise to his grandma that he can find a girlfriend in one week, and buys a dating simulator game to help him learn how to talk to women.

Stan tells a series of three spooky tales to an unlucky customer at the Mystery Shack after hours.

Dipper and the gang discover a secret society that has been erasing the memories of the citizens of Gravity Falls.

Blendin returns to face off with Dipper and Mabel in a futuristic battle that could trap them forever in time jail.

After seeing Robbie's sadness over his and Wendy's breakup, Mabel steals a love potion from a Love God.

Pacifica invites Dipper over to her mansion in order to get rid of a ghost.

The twins wonder if they really know Grunkle Stan after he is taken into custody by the government agents.

The reuniting of the Pine brothers Stanford and Stanley. A series of flashbacks from their lives are shown, and their history together is explained.

Dipper finds an unlikely friend to join him with his newest obsession- a nerdy board game called "Dungeons, Dungeons and More Dungeons."

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.

Grunkle Stan takes the kids with him on a road-trip to sabotage all the other tourist traps in Oregon.

As Dipper and Mabel's 13th birthday approaches, Ford and Dipper go on a dangerous mission.

Bill has returned to take down the Pines family. But this time he has brought some of his friends with him.

While Dipper, Soos, and Wendy try to save Mabel from a strange new world, Bill's forces plan their next move.

The Pines family make their greatest sacrifice yet and arrive at their ultimate fate following a final showdown with Bill.