The Ice King and Marceline bond over song and memories.

Trapped and alone, Finn must unravel the riddle of the weird cave with no exit.

Finn and Jake follow the Lich to the Citadel, where Finn meets his long lost dad. But just how far does the apple fall from the tree?

A visit from the Lich King sheds light on Ooo's secrets.

As the sun rises on her last day, Marceline recalls her long extraordinary life.

In order to find Finn's father, Finn and Jake must commit a cosmic crime...unless the Lich beats them to it.

Following an ally's memorial service, Jake begins acting strangely.

The final confrontation begins. Who will survive?

Finn and Jake crossover into Farmworld Finn's dimension.

The Snow Golem visits the Fire Kingdom and finds an unlikely follower.

Finn, Jake and Orgalorg converge with the comet and meet their destiny.

On the eve of battle, Marceline's archenemy comes to her with a strange proposal.

Finn and Fern's carefree visit to some old ruins turns disastrous.

Finn and Jake hunt a shadowy predator and Marceline asks Princess Bubblegum for a favor.

Five foes from Marceline's past come back to cause trouble for the Land of Ooo.

Finn, Jake, Marceline, and PB set out to hunt down the Vamps. But who is hunting them?

While Princess Bubblegum searches for a cure for Marceline, Finn and Jake take on one of the Vamps themselves.

When the Lich is accidentally freed from its amber prison in Princess Bubblegum's Castle, Finn and Jake must head forth to stop it from regaining its full power, all while being pestered by the Ice King to give him their blessing to marry Princess Bubblegum.

Finn and his friends must come together as a genuine band in order to open the gate of the Door Lord and get back their taken items.

In a distant age, the wizard Evergreen quests to save the world.

Finn's spirit is drawn into the astral plane by the power of the mysterious comet.

Marceline's evil father goes on a soul-sucking rampage after Finn and Marceline accidentally release him from the Nightosphere.

Princess Bubblegum recovers from being dropped in the Well of Power by the Ice King; however, she is altered and her condition leads to an unlikely final showdown with one of the greatest evils in order to save all life in Ooo.

Finn and Jake enter Marceline's mind to awaken her from a sleep spell she had cast on herself, without knowing that they are being tricked by a person from her past.

Jake wants to fulfill a bizarre lifelong ambition.