SPOILER ALERT! This article may contain significant plot details. Continue reading at your own risk.
"Adventure Time: With Gravity Falls" is a special episode in season one. It was a crossover between two shows, Adventure Time and Gravity Falls. The episode was 22-minutes long. The plot revolves Finn and Jake meeting Dipper and Mabel Pines.
Finn and Jake find a teleport device in Princess Bubblegum's lair. But they accidentally teleport to Gravity Falls, Oregon. And then Dipper and Mabel meet them. And then the Gnomes appear and want to kidnap Mabel. But then Jake and Finn and Dipper team up to defeat him.
One Man Banned | The Vortex of Doom | Mind Over Mabel | Over Aging Destructing Bomb | Grunkle Stan's Secret | Fired | The Return of The Gnomes Snakebiten | Teleport-A-Potty | Dipper Vs. Mabel | Vampires