Twelve- year-old Finn battles evil in the Land of Ooo. Assisted by his magical dog, Jake, Finn roams the Land of Ooo righting wrongs and battling evil. Usually that evil comes in the form of the Ice King, who is in search of a wife. He's decided he should wed Princess Bubblegum, though she doesn't want to marry him. Still, he persists in trying to steal her away, and Finn and Jake, along with Lady Raincorn (a cross between a unicorn and a rainbow) do their best to keep her from harm.
When Ice King’s magic crown goes haywire, Marceline and Princess Bubblegum resort to extreme measures to help him.
At the top of Dead Mountain, Finn discovers a treasure that comes with a terrible price.
In pursuit of a runaway Sea Lard, Finn and Jake are led down a whirlpool to a curious new land.
Jake's son TV finds a hidden box and draws the attention of a super cool Rainicorn named Lee.
Finn starts having guilt nightmares about his missing Finn Sword but are the nightmares real?
Finn brings a special delivery for Cinnamon Bun to the Fire Kingdom but it may come with a dangerous cost.
Stripped of his magic powers, Normal Man enlists Finn and Jake's help to rescue his brother Glob.
Ice King discovers something buried deep beneath the Ice Kingdom that could change Ooo forever.
Fionna and Cake go on a cooking adventure to push Cake's art to an all-new level.
While judging the hugest Battle of the Bands in the history of Ooo, Finn hears a mysterious new song.
To put his embarrassing past behind him, Jake needs his daughter Charlie’s help to win an underground Card Wars tourney.
During an excavation of human artifacts, Finn, Jake and Susan Strong are greeted by a mysterious new stranger who may hold the key to the past.
Finn and Jake must take on one of the fiercest enemies they’ve ever faced when a powerful ally goes rogue.
Finn and Jake contend with a mysterious, but familiar, new being.
Finn makes amends at the Candy Hospital while Jake tries to connect with their unexpected houseguest.
Kim Kil Whan is worried about his daughter's future and asks Jake for some parental advice.
An otherworldly encounter puts Tree Trunks on the trail of a conspiracy in the Candy Kingdom.
When disaster befalls James Baxter, it's up to Finn and Jake to help him pick up the pieces.
Princess Bubblegum's scientific mind must wrestle with her Elemental magic potential when she's faced with a Crystal Entity.
A mysterious craft invades Ooo and Finn believes it may hold the secrets to his past.
Finn, Jake and Susan set sail on an ocean voyage full of wonders and danger.
After waking up alone and shipwrecked, Finn investigates a bizarre island, in search of his friends.
Finn and Jake travel to a land where reality has been redesigned and improved.
While exploring some futuristic ruins, Susan sees glimpses of a familiar girl.
An unexpected revelation from Susan leads Finn closer to answers about his past.
Finn and his friends journey to a last refuge called Founders Island.
Finn confronts the power behind Founder's Island, but will he ever return home to Ooo?