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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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.

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

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

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