Poster of Cast and Crew in Gravity Falls - Season 2 - Episode 17 - Dipper and Mabel vs. the Future

Gravity Falls - Season 2 - Dipper and Mabel vs. the Future (Episode 17)

Plot: Mabel makes plans for her and Dipper's 13th birthday party; Dipper ventures below the town and discovers its most shocking secret.
Episode Aired On:
Monday, October 12 2015
9 years ago