Slumber Party Panic / Trouble in Lumpy Space
Season 1, Episode 1 TV-PG
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"Slumber Party Panic" - Princess Bubblegum and Finn are doing experiments in a graveyard when they accidentally create candy zombies. Princess Bubblegum and Finn must keep the fragile candy people from discovering that there's a zombie attack on the horizon. "Trouble in Lumpy Space" - Jake starts to turn lumpy after being bitten by Lumpy Space Princess. It's up to Finn to venture to another dimension, Lumpy Space, where he must find a cure that will save his friend.
Prisoners / Tree Trunks
Season 1, Episode 2 TV-PG
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"Prisoners" - Finn and Jake are kidnapped by the Ice King! He takes them back to his lair, adding them to his collection of kidnapped princesses. Now Finn and Jake must save the princesses and break them out of the Ice King's prison before he marries one of them. "Tree Trunks" - When kindly elephant Tree Trunks joins Finn and Jake on a noble quest for the crystal apple, Finn doesn't think she has what it takes to be a hero. But Finn will learn that heroes come in all shapes and sizes.
The Enchiridion / The Jiggler
Season 1, Episode 3 TV-PG
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"Enchridion" - Princess Bubblegum tells Finn about a book for heroes called "The Enchiridion." They embark on a quest for the book, and are tested at every turn. "The Jiggler" - Finn and Jake happen upon a jiggly creature who follows them home to their tree house. After some troubles taking care of the Jiggler, they must find a way to return him home to his mother before it's too late.
Ricardio, the Heart Guy / Business Time
Season 1, Episode 4 TV-PG
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"Ricardio, the Heart Guy" - There's a new guy in the Candy Kingdom, and his name is Ricardio. Finn is super jealous and believes Ricardio's intentions toward Princess Bubblegum are less than honorable. So, Finn and Jake follow Ricardio in hopes of uncovering his true intentions. "Business Time" - When a group of businessmen wash ashore, Jake convinces Finn to take them under their wing. Eventually Finn and Jake become fatter and lazier, allowing the businessmen to do everything for them...including being heroes! But when the businessmen go too far it's up to Finn and Jake to get off the couch and save the day.
My Two Favorite People / Memories of Boom Boom Mountain
Season 1, Episode 5 TV-PG
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"My Two Favorite People" - Jake tries to get Lady Rainicorn and Finn to become friends so he doesn't have to split his time between the two. But when they become buddies Jake gets jealous and decides to do whatever he can to split them apart. "Memories of Boom Boom Mountain" - When Finn tries to help a sad mountain, he ends up upsetting someone else. Trying to help everyone he spreads himself so thin that, in the end...he risks helping no one. Except maybe himself.
Finn the Wizard / Evicted!
Season 1, Episode 6 TV-PG
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"Finn the Wizard" - Finn gets lured by a roadside salesman offering "Wizard powers." But are Finn and Jake prepared for the great responsibility that comes with cool powers? "Evicted" - On a dark and stormy night, Finn and Jake are visited by Marceline, the Vampire Queen. She claims the treehouse is actually her house and kicks them out! Now Finn and Jake must find a new, vampire-free, home.
City of Thieves / The Witch's Garden
Season 1, Episode 7 TV-PG
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"City of Thieves" - Finn and Jake enter a City of Thieves to retrieve a young girl's belongings, but will they give in to temptation and become thieves themselves? "The Witch's Garden" - When a witch casts a spell that steals Jake's powers, Finn and Jake must go on a journey to reclaim them.
What Is Life? / Ocean of Fear
Season 1, Episode 8 TV-PG
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What is Life? - After Jake pulls the greatest prank in the history of pranks, Finn decides to get back at him by building a "Never-Ending Pie Throwing Robot" (NEPTR). But when Finn steals some of the Ice King's lightning power to make NEPTR fully operational, he gets caught up in a paternal struggle with his arch nemesis over the naively innocent pie-throwing robot. "Ocean of Fear" - The normally fearless Finn realizes he's actually afraid of something: the ocean! If that wasn't bad enough, his fear manifests itself in a smoky phantom called the Fear Feaster. Now, in order to destroy the Fear Feaster, Finn must finally overcome his greatest fear.
Wedding Bells Thaw / Freak City
Season 1, Episode 9 TV-PG
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"Wedding Bells Thaw" - The Ice King is getting married! And he wants Finn and Jake to throw him a "Man-lerette" Party! Our heroes are forced to spend the day with their sworn enemy to ensure he will never kidnap another princess again.
The Duke / Donny
Season 1, Episode 10 TV-PG
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"The Duke" - Finn goes to great lengths to catch the evil Duke of Nuts, only to discover he's not such a bad guy after all. "Donny" - In an attempt to save a village, Finn and Jake rehabilitate Donny the Ogre, who's a real jerk.
Henchman / Dungeon
Season 1, Episode 11 TV-PG
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"Henchman" - Finn becomes Marceline's new henchman and reluctantly sets out on a wild night of evil mayhem. Now, Jake must overcome his fear of Marceline in order to save his friend from a lifetime of vampire servitude! "Dungeon" - Against Jake's warnings, Finn decides to explore a scary underground dungeon on his own, but he soon realizes he may have signed on for more adventure than he can handle...
What Have You Done?/Rainy Day Daydream
Season 1, Episode 12 TV-PG
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"What Have You Done?!" - Princess Bubblegum sends Finn and Jake to capture the Ice King and throw him in jail for another one of his evil schemes against the Candy Kingdom. Our heroes are more than happy to help out... until they start to suspect the Ice King may be innocent for the first time in his life! "Rainy Day Daydream" - There's a knife storm outside, forcing Finn and Jake to spend the day indoors. Jake suggests they use their imaginations to create an adventure inside the treehouse. Finn wants nothing to do with it, but when the dangerous monsters and obstacles in Jake's overactive imagination start to become real, he may have no choice.
The Gut Grinder / Finn Meets His Hero
Season 1, Episode 13 TV-PG
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"The Gut Grinder" - Finn and Jake track the elusive Gut Grinder, a mysterious monster sneaking into unsuspecting villages to steal all their gold. But when Jake is mistaken for the monster and thrown in jail, Finn must prove that his pal is not the monster everyone thinks he is. "Finn Meets His Hero" - Finn meets his idol and discovers that the former hero is now a brooding, bitter old hermit who believes being heroic is pointless. Finn decides to stop being violent and follow in his idol's more peaceful footsteps. Big mistake!