The Cooler

Synopsis
The Fire Kingdom is struck by a natural disaster and the Flame Princess seeks help from an unlikely ally.

Plot
The episode starts with a fire citizen waking due to his alarm. He shuts it off and says that it is freezing today. He goes on his pants, which are over sized for him now. He says that he finally lost weight and that exercise is the key. But there was a strange thing. He didn't exercise.

Fire Kingdom is shown from the outside view, and it appears extinguished. The Fire Elementals are worried about these strange happenings. One of the Fire Elemental Guards is ashamed because his headgear isn't emitting much flame, while another one says to him his entire body except head has been extinguished. Two brothers of the Fire Kingdom hug each other for warmth, but one of the brother ended up being absorbed by his older brother. Suddenly, the ground breaks and releases a cool air pocket which reduces the size of most Fire Citizens. In the discussion chamber, Flame Princess along with her brothers and aunt discuss the matter. She reveals that the magma in the kingdom is cooling down to cause these incidents, and weakening the life force of the citizens. Randy tells he will do his best to help the Kingdom, but Flame Princess tells him to stay here only. Her aunt advises Flame Princess to make every citizen to hug each other for warmth, but this idea is disregarded. Flame Princess' older brother goes on a more radical view and says to blow up the Candy Kingdom.

While saying this, he asks his sister whether it is safe to talk about the destruction of Candy Kingdom in front of its ex-member Cinnamon Bun. Cinnamon Bun is seen trying to pick something in his nose, which Flame Princess tells that to avoid it. Flame Princess disregards the idea of her older brother, telling she needs Princess Bubblegum as an ally right now. Flame Princess' older brother asks Randy to call Bubblegum. As soon as he starts to call Princess Bubblegum, the ground below them releases yet another cool air pocket, but Cinnamon Bun arrives in time to save everyone there and take them away. She asks Cinnamon Bun to take her to the core entrance, to which he obliges. She also asks Princess Bubblegum to come and help her, but still regards her as an enemy to Fire Kingdom. Bubblegum asks her first name, but she snaps back at her saying they aren't friends. Flame Princess explains the situation, and they share their views as princesses. When they both reach near a huge door, Princess Bubblegum's Mondometer starts to act up.

She then asks Flame Princess what is behind these doors, to which she replies that there are ancient relics of Fire Kingdom, and no strangers are allowed inside. Bubblegum convinces Flame Princess to let her enter. Wanting the well being of her citizens, she lets Princess Bubblegum in, but warns her not to touch anything.

They enter through the doors, inside which are Sleeping Fire Giants, which she explains are there to help Fire Kingdom in times of crisis. She also reveals only the royal bloodline knows about their existence. As she starts to go further, she sings The Sleeping Fire Gods. While she sings, Princess Bubblegum starts to steal the geothermic control units of these giants, while Flame Princess is unaware. As Flame Princess ends the song, she notices the geothermic control units of one giant fall and warns Princess Bubblegum not touch these. Princess Bubblegum explains that she is just putting it back. Flame Princess is convinced, but when Bubblegum goes past the giant, her bag rips off, revealing she stole these units.

She gets angry at Bubblegum, and starts to attack her. She misses her first shot and one of giant gets hit and explodes. This much further angers Flame Princess. Bubblegum takes advantage of this and starts to mock Flame Princess. She gets more enraged and attacks Princess Bubblegum, each time missing as the Princess cloaks herself to avoid getting hit. When she was going to escape, Flame Princess blows up two of the giants and proceeds to chase after Princess Bubblegum. The explosion caused Princess Bubblegum to hit against the wall hard. Flame Princess came into the scene and threatened to kill the defeated princess.

As Princess Bubblegum lies in the wall, Flame Princess prepares to finish her, but Princess Bubblegum activates a gadget that creates lightning, the lighting goes into the steam Flame Princess created and it begins to rain. Flame Princess is too weak to fight as the water falls on her, and Princess Bubblegum falls on the ground still hurt by the explosion.

Princess Bubblegum then confesses that she was the one who messed up the core temperature purposely to enter this forbidden room. She did this to get the weapon stockpile that Flame Princess had. Puzzled, Flame Princess asks her how did she get to know about those weapons. It is then revealed that Cinnamon Bun is still picking his nose and finds that it is a glass structure inside. He pulls it out and it is revealed that it is a camera, which Bubblegum used to spy on Flame Princess. Flame Princess is aggravated because Bubblegum is still spying on her and she calls her a bad person. Bubblegum then says to keep one last giant, and says that she hopes Flame Princess gets to know she isn't a bad person. When they were starting to leave, Flame Princess reveals her first name to be Phoebe.

Bubblegum then calls Ice King to stop freezing the core of the Fire Kingdom, which he does so. As soon as the freezing is over, the Fire Kingdom brims with life again, and every one of the sad Fire Elementals are happy. The scene changes to Princess Bubblegum's spying room, where she is spying on every citizen of Candy Kingdom. She then finds the camera which is still spying on Flame Princess, and tears out its wire. She then notices the camera which is spying on Finn and Jake, who are singing the Food Chain.

The episode ends when Princess Bubblegum tears all of the wires of her spy cameras, and leaves the room and locks it. She puts a sign that states 'Do Not Enter' on the door and leaves.

Major characters

 * Flame Princess
 * Princess Bubblegum
 * Sleeping Fire Giants

Minor characters

 * Fire Elemental
 * Flame Princess' older brother
 * Randy
 * Flame Person 1
 * Ice King
 * Candy People
 * Cinnamon Bun
 * Donut Guy
 * Starchie
 * Gumdrop Lass 1
 * Gumdrop Lass 2
 * Finn
 * Jake
 * The Lich
 * Mr. Pig
 * Nymphs
 * Breakfast Princess
 * Strudel Princess
 * Syrup Guard
 * Kent
 * Shelby
 * Snail

Songs

 * Food Chain (song) (Reenactment)
 * A Kingdom from a Spark

Trivia

 * This episode has Randy and Flame Person 1's first speaking role.
 * Flame Princess reveals that her real name is Phoebe.
 * It is revealed that the Fire Kingdom holds Sleeping Fire Giants that protect the kingdom in times of crisis.
 * This is similar to the Gumball Guardian, of the Candy Kingdom.
 * The use of Guardians in times of crisis is similar to the ones in , only without the requirement for the Guardians to select a member of the royal family with royal blood, like Flame Princess.
 * Flame Princess sings for the first time in this episode.
 * It is revealed that Princess Bubblegum has cameras spread into multiple locations, as shown in the monitor room at the end of the episode.

Cultural references

 * The scene where Flame Princess tells Princess Bubblegum her real name is similar to the scene Wyldstyle tells Emmet her real name in .

Production notes

 * This is the final episode of Adventure Time to air in 2014.

Episode connections

 * Finn and Jake can be seen singing "Food Chain," from the episode of the same name.
 * Scenes from "Princess Day," "Little Brother," "Thanks for the Crabapples, Giuseppe," and other episodes appeared on Princess Bubblegum's cameras.

Storyline analysis

 * For some reason, Cinnamon Bun has lost the intelligence he gained in "The Red Throne", reverting back to his old, clueless, pre-Red Throne self. However, his tone of voice sounds the same way it did after he became intelligent, so it's possible that his behavior is just a personality trait. It may have been one of the side-effects of the Fire Kingdom's cooling that made Cinnamon Bun 'less baked' thus temporarily reverting him back to his original state.

Errors

 * When the shot of all of Princess Bubblegum's camera monitors are first shown, the one with Flame Princess is up one and two right of Finn and Jake. After their monitors cut out, the one up one and two to the left of Finn and Jake is out, and the one where Flame Princess was now seems to have a picture of grass.
 * Despite the events had passed, there were still many scenes from other episodes and this episode on Princess Bubblegum's cameras.