Main story arcs for this season include Bubblegum adjusting to life in exile and eventually reclaiming the Candy Kingdom crown, and Marceline coming to terms with her vampiric nature.
ボニーとネディThe greed of the King of Ooo leads to a crisis in the Candy Kingdom, and (ex-) Princess Bubblegum has to return briefly from exile to deal with it.
ヴァーミント
第2話
ヴァーミントBubblegum turns to Marceline's help when something threatens the citizens of her homestead.
チェリークリームソーダ
第3話
チェリークリームソーダThe arrival of a visitor causes Cherry Cream Soda's life to fall flat.
ウーの王のキノコ指令
第4話
ウーの王のキノコ指令The loyalty of Finn and Jake comes into question when the King of Ooo orders them to intercept a flying mushroom.
フットボール
第5話
フットボールBMO and Football decide upon a deal, but one of them cannot keep up their end of the bargain.
ヴァンパイア・クイーン
第6話
ヴァンパイア・クイーンFinn and Jake hunt a shadowy predator and Marceline asks Princess Bubblegum for a favor.
かわらないもの、かわるもの
第7話
かわらないもの、かわるものAs the sun rises on her last day, Marceline recalls her long extraordinary life.
ヴァンパイアたちの復活
第8話
ヴァンパイアたちの復活Five foes from Marceline's past come back to cause trouble for the Land of Ooo.
エンプレスの目
第9話
エンプレスの目When one of her oldest adversaries targets the Ice Kingdom, Marceline rushes to Simon's rescue.
昔かたぎの男
第10話
昔かたぎの男Finn, Jake, Marceline, and PB set out to hunt down the Vamps. But who is hunting them?
癒しのパワー
第11話
癒しのパワーWhile Princess Bubblegum searches for a cure for Marceline, Finn and Jake take on one of the Vamps themselves.
ヴァンパイア・キングの願い
第12話
ヴァンパイア・キングの願いOn the eve of battle, Marceline's archenemy comes to her with a strange proposal.
暗い雲の中から
第13話
暗い雲の中からFollowing the release of the Vampire King's Vampuric essence, Finn, Jake, and Princess Bubblegum are forced into a fight against the seemingly unstoppable force without the aid of a depressed Marceline.
ビーモの誕生日
第14話
ビーモの誕生日On BMO's birthday, Moe comes to visit and give BMO a special birthday mission. But while BMO is away, Moe begins to overstay his welcome at the tree house.
ビーモの成長
第15話
ビーモの成長BMO continues its quest to adulthood. It'll discover that something went wrong in the factory where all the MOs where created.
ヴィオラの初舞台
第16話
ヴィオラの初舞台Viola tries to get a part in LSP's play, but gets made into LSP's personal assistant instead.
ビーモはカウボーイ
第17話
ビーモはカウボーイBMO convinces his friends to join him in a live action cowboy role-playing game.
イルカ大統領はどこへ?
第18話
イルカ大統領はどこへ?Finn and Jake attempt to track down President Porpoise before Vice President Blowfish takes over.
うつろな目の少女
第19話
うつろな目の少女One very spooky night, Finn and Jake come face-to-face with an urban myth.
悪い気を追い払え!
第20話
悪い気を追い払え!Finn, Jake, LSP and BMO seek shelter as they contend with some deadly weather.
紐と空き缶と誘拐事件
第21話
紐と空き缶と誘拐事件Ice King suffers a heartbreaking loss and it's up to Finn and Jake to find the culprit.
ペテン師キッズ
第22話
ペテン師キッズFinn takes a group of at-risk Candy Kingdom youth on a camping trip they’ll never forget.
交錯する世界
第23話
交錯する世界Finn and Jake crossover into Farmworld Finn's dimension.
イーグレスの広間
第24話
イーグレスの広間Trapped and alone, Finn must unravel the riddle of the weird cave with no exit.
誰のためのフルート
第25話
誰のためのフルートFinn has secret meetings with a powerful wizard.
バナナもいろいろ
第26話
バナナもいろいろFinn and Jake infiltrate the Banana Guard ranks and stumble upon a conspiracy.
