Episodes: Series - Adventure Time with Finn & Jake S10 - 2018

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With a vile monster threatening the peace of the Candy Kingdom, Princess Bubblegum charges Finn with killing it, which proves to be a difficult task as Finn still can't get over Fern's death.

After becoming door-to-door sellers, BMO and the Ice King come upon Gumbald's dungeon and sell him Finn's baby teeth, leading to unforeseen consequences.

As she inadvertently finds herself involved in an imminent rap battle against Son of Rap Bear, the apprehensive Flame Princess starts seeking a way to defeat him.

Upon seeing the silver cup, Princess Bubblegum relates to Finn, Marceline, and Jake how she created the Candy Kingdom a long time ago.

While Finn is celebrating his 17th birthday with his friends, an uninvited enigmatic guest shows up, bringing him a strange present.

As the ex of Tree Trunks contacts her in order to have his ring back, she contemplates her past tumultuous relationships.

As Peppermint Butler allows Hunson Abadeer to wander the world for a day without his powers, the latter goes to see his daughter, Marceline, in the hope of winning back her affection.

Following some eerie happenings at Joshua and Margaret's old office, Finn and Jake set out to investigate at the behest of Kim Kil Whan.

Finn questions his sense of humor as he comes up with a joke that nobody gets, whereupon he decides to make certain that he's funny.

Jake is taken aback as he learns from his alien parent, Warren Ampersand, that he has to save the residents of his home planet from a villainous alien.

Finn and Jermaine set out to rescue Jake, whom they learn is in outer space. As they wind up on Mars, the duo runs into a sly Martian, who attempts to trap them using a series of puzzles.

With a war between Princess Bubblegum and Gumbald in the offing, Finn and Jake pay the latter a call in an attempt to nip the conflict in the bud.

Many years into the future, BMO recounts the story of the Great Gum War between the Candy Kingdom and Gumbaldia.