Here are the episodes that were featured in season one of Adventure Time.... (2010)

Name of Episode/Summary Promo Number Air Date

Slumber Party Panic/Trouble in Lumpy Space

Finn and Princess Bubblegum must protect the Candy Kingdom from a horde of candy zombies they accidentally created and deal with the consequences of breaking a "royal promise."/ Finn must travel to Lumpy Space to find a cure that will save Jake, who was accidentally bitten by Lumpy Space Princess at Princess Bubblegum's marshmallow tea party.

1A/1B 4/5/10

Prisoners of Love/Tree Trunks

Finn and Jake attempt to rescue a series of princesses: Lumpy Space Princess, Hotdog Princess, Slime Princess, Ghost Princess, Wildberry Princess, Emerald Princess, and Raggedy Princess who were kidnapped by the Ice King in his attempt to marry one./ Tree Trunks joins Finn and Jake who go on a quest to fulfill her desire of picking a proposed legendary "crystal gem apple" in an evil forest.

2A/2B 4/12/10

The Enchiridion!/The Jiggler

Finn and Jake go on a quest for a magical book that would prove them worthy of being righteous heroes./A strange creature attracted by Finn's auto-tuned singing voice follows the duo to their home and they keep him as a pet, but soon struggles to keep him after several strange occurrences.

3A/3B 4/19/10

Ricardio the Heart Guy/Business Time

Finn believes that Princess Bubblegum's new friend, a literal heart named "Ricardio", is evil, and is proven right after learning that Ricardio is the heart of the Ice King./ Finn and Jake fall victim to their own laziness when they delegate their adventuring responsibilities to a group of businessmen they thawed from an iceberg.

4A/4B 4/26/10

My Two Favorite People/Memories of Boom-Boom Mountain

Jake feels overwhelmed at not having enough time for Finn and his girlfriend, Lady Rainicorn, so he tries to get them to hang out more, leading to disaster between the two friends./Finn reflects on an upsetting experience when he was a baby and pledges to help everyone in need, but this proves more difficult and stressful than imagined.

5A/5B 5/3/10


Finn and Jake are coaxed by a skeleton man to enroll in a course for free magic powers, but are ultimately tricked into helping stop an asteroid.

6A 5/10/10


Finn and Jake search the land of Ooo for a new home after a vampire queen named Marceline claims the duo's treehouse as her own.

6B 5/17/10

City of Thieves

When confronted by a Tree Witch over how uncorruptible he is, Finn enters the City of Thieves with Jake to confront a thief who is believed to have stolen a flower basket from a little girl named "Penny". However, staying pure of heart within the city proves to be easier said than done.

7A 5/24/10

The Witch's Garden

Jake loses his enthusiasm for adventure when a witch strips him of his powers.

7B 6/7/10

What is Life?

Finn builds N.E.P.T.R., a Never-Ending Pie-Throwing Robot, to pull a prank on Jake, but the machine's conscience is conflicted by the will of the Ice King when he is attacked by a lightning bolt that contained the Ice King's private particles.

8A 6/14/10

Ocean of Fear

Jake tries to help Finn overcome his sudden fear of the ocean.

8B 6/21/10

When Wedding Bells Thaw

The Ice King suppresses his kidnapping urges to wed a suspicious bride and convinces Finn and Jake to throw him a "manlorette party".

9A 6/28/10


Finn's headstrong decision to explore a dungeon in defiance of Jake and Princess Bubblegum's warnings puts him in great danger.

9B 7/12/10

The Duke

Finn turns Princess Bubblegum green and bald, and faces a moral quandary—whether to confess his mistake and be hated by his friend forever, or let Princess Bubblegum wrongly accuse the Duke of Nuts, who has a pudding obsession, instead.

10A 7/19/12

Freak City

After being transformed into a foot by a magic man, Finn joins forces with a band of misfits to turn back to normal.

10B 7/26/12


Finn and Jake help a bullying grass ogre named Donny turn his life around, without realizing the ecological damage they may be causing in the process.

11A 8/9/12


Finn takes his place as Marceline's new henchman.

11B 8/23/12

Rainy Day Daydream

Stuck indoors due to a raining knife storm, Finn discovers that Jake can make his imagination come to life, causing chaos in the treehouse.

12A 9/6/12

What Have You Done?

Without giving good details Princess Bubblegum tells Finn and Jake to capture the Ice King as their prisoner, but when they interrogate him they think that he's innocent.

12B 9/13/12

His Hero

The great warrior Billy inspires Finn and Jake to practice nonviolence, but the duo finds it difficult to resist old ways.

13A 9/20/12

Gut Grinder

Finn and Jake pursue a havoc-wreaking gold-eating "Gut Grinder", but Jake suspects he himself might be the culprit.

13B 9/27/12