Vault of Bones

Synopsis
Finn takes Flame Princess on a dungeon crawl in order to alleviate her fears that she's evil.

Plot
The episode starts inside the Tree Fort. Jake is preparing tea and playing with the water while he fills the pot. Finn and Flame Princess are playing cards on the sofa. Flame Princess sighs and Finn asks, "What's wrong?" Flame Princess replies that it's nothing. Finn then gets close to Flame Princess and breathes heavily in her face, and they both laugh. Jake then asks if anyone wants some tea. He turns on the stove and waits. The flames under the tea kettle grow big and it startles Jake. The flames then turn into the Flame King's head and go toward Flame Princess, whispering "evil" over and over again. Flame Princess and Jake are surprised to see Flame King but Finn simply waves his hand. Flame King apologizes, saying that he thought his daughter was alone and leaves. Jake turns off the stove, while Finn asks Flame Princess, "What was that?," and Jake replies that he was saying evil again and again.

Flame Princess explains that her dad is annoying and is always whispering that she is evil when she's not paying attention. Finn then jumps on the table and tells her that she is not evil and her dad is only making her feel bad so she'll think she is evil. Flame Princess doubts that and Finn suggests going to a dungeon to take her mind off of things. Jake comes to the sofa and offers them tea. Finn and Flame Princess laughingly leave Jake alone drinking tea.

Finn and Flame Princess walk into the forest looking for a dungeon entrance. Flame Princess then uses her "Heat Sense" and guides Finn to a secret switch that opens a door. As they enter, Finn finds a gauntlet, as well as a torch which he asks Flame Princess to light for him. Flame Princess suggests they do not need a torch because she is made of fire. Finn states that it is cool to use torches in dungeons.

Shortly after entering the dungeon, the two of them encounter a skeleton who asks them what they are doing there. Flame Princess simply replies, "Burning you alive," and raises her arms to burn the skeleton, only to be stopped by Finn with his own ways of manipulating the skeleton, specifically having it do the splits and then shouting at it for his own advantage. The skeleton points them to a treasure chest that is in the corner. They investigate, and find that the chest is locked and needs a key. They go off and search more and find a large skeleton guard. Finn has FP shoot down a bone chandelier and they come charging at it, but Finn seems to fly straight through it. It is revealed to be a hologram. It take them a lot of time finding the keys in some parts of the dungeon. They find the key to open this chest at the end of the episode.

Major Characters

 * Finn
 * Flame Princess
 * Skeletons
 * Goo Skulls

Minor Characters

 * Jake
 * Flame King
 * Snail

Songs

 * Dungeon Crawl

Trivia

 * This is the first time that Flame Princess's hair is not up, and it appears to be shorter than usually seen. However, when she burns the frog-skeletons, her hair is up.
 * This is the first time Flame Princess refers to Finn as her boyfriend.
 * This is the first time Flame Princess uses Finn's Sword.
 * In the episode, Finn refers to Flame Princess as "FP" for the first time. Likewise, she refers to him as "FTH," an abbreviation for "Finn the Human."
 * The deck of cards that Flame Princess and Finn were playing with had faces on the back of them, the same deck used in "All the Little People" by Flame Princess and Lumpy Space Princess.
 * Flame Princess shows new abilities in this episode.
 * She displays "Heat Sense", which she uses to detect things like the dungeon trigger.
 * She can also create blue flames similarly to an acetylene torch.

Cultural references

 * Flame Princess and Finn's actions in the dungeon seem reflect "." When Finn decides to let Flame Princess do things her way, he then acts much like a dungeon master, say things like "There's a door over there, what do you wanna do?" and "...it's a legion of Goo Skulls! How do you defend?." When he asks "How do you defend?," Flame Princess replies "Snake Fire!" to which Finn states, "Fire burn goo." This "problem, solution, result" format of dialogue is much like Dungeons and Dragons gameplay.
 * Much of the dungeon is based on quest video games, especially .

Episode connections

 * The question of whether Flame Princess is evil or not returns again; the topic was first brought up in "Ignition Point."
 * Likewise, Flame King continues to harass her about her alignment as he did in the end of Ignition Point.
 * When Finn suggested they go to a farmer's market next time, Flame Princess said, "And burn it." This may be a reference to the episode "Finn the Human," in which the Destiny Gang burns down a farmer's market.

Errors

 * When Flame Princess first tries to use the key at the end of the episode, there were four keys left on the ground, but when she throws the key she was holding away, it became three.