27 episodesFirst aired 26 March 2016
E1Mar 201611m
When Ice King's magic crown goes haywire, Marceline and Princess Bubblegum resort to extreme measures to help him.
E2Apr 201611m
Finn unearths a treasure with a terrible price at the top of Dead Mountain.
E3Apr 201611m
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.
E4Apr 201611m
Jake's son finds a hidden box and draws attention from a Rainicorn.
E5Apr 201611m
When Finn begins having nightmares about his missing Finn Sword, he wonders if they are real.
E6May 201611m
Finn brings a special delivery for Cinnamon Bun to the Fire Kingdom but it may come with a dangerous cost.
E7May 201611m
Normal Man asks for Finn and Jake's help to rescue his brother.
E8May 201611m
Ice King digs up an item buried underneath the Ice Kingdom.
E9May 201611m
Fionna and Cake go on a cooking adventure to push Cake's art to an all-new level.
E10Jun 201611m
Finn hears a mysterious song while judging a Battle of the Bands.
E11Jul 201611m
Jake and his daughter Charlie fight to restore Jake's honor and win a super-secret underground Card Wars tourney.
E12Nov 201611m
While searching for old human artifacts, Jake, Finn, and Susan Strong meet Tiffany, who is employed by a mysterious Doctor Gross.
E13Nov 201611m
After Susan Strong's chip is activated, she goes rogue and attacks Finn.
E14Jan 201711m
Finn and Jake puzzle over the nature of a mysterious newcomer.
E15Jan 201711m
Doctor Princess thrusts a great responsibility upon Finn. Jake goes adventuring with a new friend.
E16Jan 201711m
Kim Kil Whan is worried about his daughter's future and asks Jake for some parental advice.
E17Jan 201711m
An otherworldly encounter puts Tree Trunks on the trail of a conspiracy in the Candy Kingdom.
E18Jan 201711m
When disaster befalls James Baxter, it’s up to Finn and Jake to help him pick up the pieces.
E19Jan 201711m
Princess Bubblegum's scientific mind must wrestle with her Elemental magic potential when she's faced with a Crystal Entity.
E20Jan 201711m
A mysterious craft invades Ooo and Finn believes it may hold the secrets to his past.
E21Jan 201711m
Finn, Jake, and Susan set sail on a ocean voyage full of wonders and danger.
E22Jan 201711m
After waking up alone and shipwrecked, Finn investigates a bizarre island in search of his friends.
E23Jan 201711m
Finn and Jake travel to a land where reality has been redesigned and improved.
E24Feb 201711m
While exploring some futuristic ruins, Susan sees glimpses of a familiar girl.
E25Feb 201711m
An unexpected revelation from Susan leads Finn closer to answers about his past.
E26Feb 201711m
Finn and his friends journey to a last refuge called Founders Island.
E27Feb 201711m
Finn confronts the power behind Founders Island, but will he ever return home to Ooo?
