Ice King has some problems with his crown. Princess Bubblegum helps along with Marceline.

At the library, Finn learns of a mountain with treasure possessing transformative properties at its peak. He and Jake venture to find the treasure, but find more than they expected when they encounter the hermit guarding the treasure.

In pursuit of a runaway Sea Lard, Finn and Jake are led down a whirlpool to a curious new land.

T.V., still living with his mother, discovers a magical object and without knowing, attracts Lee - a rainicorn from the Crystal Dimension, which reveals an important part of Lady Rainicorn's past.

Fin loses his Fin-Sword and he needs to get it back ASAP, because someone is using it to cause terror and rampage.

Princess Bubblegum feels sad that Cinnamon Bun is the only candy person in the Flame Kingdom, so she creates Bun Bun, a tiny cinnamon bun, to keep him company.

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 an adventure to push the art of cake to another level.

Finn gets to be the judge of battle of the bands held in the Candy Kingdom, when he starts to hear music that nobody else can.

Daddy-Daughter Card Wars: To put his embarrassing past behind him, Jake needs his daughter Charlie's help to win an underground Card Wars tourney.

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

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

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

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

Kim Kil Whan seeks Jake's assistance with his daughter's detachment from school. Jake gets distracted by something else instead.

Tree Trunks receives a strange visitor who reacquaints her with some family members. Tensions flare between her and Princess Bubblegum.

James Baxter takes his turn to showcase his backstory through an interesting collage of flashbacks brought on by his famous Ball being popped.

Princess Bubblegum explores her new candy powers.

Consequences regarding Susan's last sent message appear at the Candy Kingdom's shore, bringing about new questions and mysteries leading Finn, Jake and Susan to embark on a new adventure.

After a mysterious craft lands in Ooo, Finn, Jake, Susan Strong, set sail for the Island that it originated, hoping to learn the truth about the past and what happened to the humans.

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

Finn and Jake find BMO, who is enjoying newfound fame and popularity in a new land.

Susan strong has flashbacks to her life when she was younger, and starts remembering who she actually is.

Susan drops a big surprise on Finn and questions about his past are answered.

Finn finally finds what he was looking for but things are not the way he expected them to be. Susan sees someone from her past life.

Finn decides to leave the island and tries to get everyone else to come with him as well.