Episode 1 - Broke His Crown

When Ice King's magic crown goes haywire, Marceline and Princess Bubblegum resort to extreme measures to help him.

Episode 2 - Don't Look

Finn unearths a treasure with a terrible price at the top of Dead Mountain.

Episode 3 - Beyond the Grotto

Finn and Jake follow their Sea Lard into the pond in front of their home, and in doing so, are led to a strange new world.

Episode 4 - Lady Rainicorn of the Crystal Dimension

Jake's son finds a hidden box and draws attention from a Rainicorn.

Episode 5 - I am a Sword

When Finn begins having nightmares about his missing Finn Sword, he wonders if they are real.

Episode 6 - Bun Bun

Finn brings a special delivery for Cinnamon Bun to the Fire Kingdom but it may come with a dangerous cost.

Episode 7 - Normal Man

Normal Man asks for Finn and Jake's help to rescue his brother.

Episode 8 - Elemental

Ice King digs up an item buried underneath the Ice Kingdom.

Episode 9 - Five Short Tables

Fionna and Cake go on a cooking adventure to push Cake's art to an all-new level.

Episode 10 - The Music Hole

Finn hears a mysterious song while judging a Battle of the Bands.

Episode 11 - Daddy-Daughter Card Wars

Jake and his daughter Charlie fight to restore Jake's honor and win a super-secret underground Card Wars tourney.

Episode 12 - Preboot

While searching for old human artifacts, Jake, Finn, and Susan Strong meet Tiffany, who is employed by a mysterious Doctor Gross.

Episode 13 - Reboot

After Susan Strong's chip is activated, she goes rogue and attacks Finn.

Episode 14 - Two Swords

Finn and Jake puzzle over the nature of a mysterious newcomer.

Episode 15 - Do No Harm

Doctor Princess thrusts a great responsibility upon Finn. Jake goes adventuring with a new friend.

Episode 16 - Wheels

Kim Kil Whan is worried about his daughter's future and asks Jake for some parental advice.

Episode 17 - High Strangeness

An otherworldly encounter puts Tree Trunks on the trail of a conspiracy in the Candy Kingdom.

Episode 18 - Horse and Ball

When disaster befalls James Baxter, it’s up to Finn and Jake to help him pick up the pieces.

Episode 19 - Jelly Beans Have Power

Princess Bubblegum's scientific mind must wrestle with her Elemental magic potential when she's faced with a Crystal Entity.

Episode 20 - Islands: The Invitation (1)

A mysterious craft invades Ooo and Finn believes it may hold the secrets to his past.

Episode 21 - Islands: Whipple the Happy Dragon (2)

Finn, Jake, and Susan set sail on a ocean voyage full of wonders and danger.

Episode 22 - Islands: Mysterious Island (3)

After waking up alone and shipwrecked, Finn investigates a bizarre island in search of his friends.

Episode 23 - Islands: Imaginary Resources (4)

Finn and Jake travel to a land where reality has been redesigned and improved.

Episode 24 - Islands: Hide and Seek (5)

While exploring some futuristic ruins, Susan sees glimpses of a familiar girl.

Episode 25 - Islands: Min & Marty (6)

An unexpected revelation from Susan leads Finn closer to answers about his past.

Episode 26 - Islands: Helpers (7)

Finn and his friends journey to a last refuge called Founders Island.

Episode 27 - Islands: The Light Cloud (8)

Finn confronts the power behind Founders Island, but will he ever return home to Ooo?

Episode 28 - Episode 28