The episode begins with the Ice King opening his refrigerator to retrieve a slice of cheesecake. Inside, he finds the cheesecake surrounded by Gunter and a group of giggling penguins who have wedged a grenade labeled "Sleepin' Gas" into it. Apparently not noticing the grenade, he picks up Gunter (telling the Penguin that he's "hanging with a bad crowd") and the cheesecake and leaves the room to eat. The Ice King eats almost all of the cheesecake except the portion containing the grenade and then decides he'll save the rest for another time, but before he can put it away Gunter shoves the grenade down his throat.
The grenade's gas renders the Ice King unconscious, and Gunter informs the other penguins. They carry the sleeping Ice King to his bed and proceed to throw a party in his castle. They stage a walrus race and a croupier takes bets on which walrus will win. Lumpy Space Princess arrives, and bets five fish on Walrus #5. When #5 begins to lag behind, LSP becomes irritated and hits it with a hockey stick, prompting it to attack her. She yells for Gunter to help her, and Gunter runs to the Walrus track and grabs her from the walrus' jaws. Walrus #5 grabs Gunter and hurls him into a wall, where he hits an icicle and loses consciousness.
When Gunter wakes up, his head has been split open and his pulsating green brain is clearly visible. Scared of his bizarre appearance, the other penguins and LSP scream and leave the Ice Kingdom. Alone, Gunter has visions of the Catalyst Comet and the silhouette of what appears to be Abraham Lincoln. He goes into the Ice King's woodworking area and uses a band saw to carve small wooden cutouts of various deities, among them Abraham Lincoln and Death. He lines the cutouts up on the floor and seems to concentrate his mind on them, emitting a yellow-green beam of light from his flippers that connects to his exposed brain. Another beam of light appears on the farthest cutout from Gunter, and travels to each cutout in succession until reaches Gunter's brain as well. A third beam of light emits from Gunter's brain and travels out of Earth's atmosphere to an unknown planet.
An alien living on the unknown planet runs to an alien child accompanied by its parents and shouts that they have to kneel because Orgalorg is signaling them. The alien child asks who Orgalorg is, and its parents state that they thought Orgalorg was a fictional character in a myth their own parents told them. The alien child's grandparents arrive just in time to hear this, and the alien grandmother insists that Orgalorg is real. She claims that in the distant past Orgalorg was an extremely powerful cosmic entity who ruled the solar system as a "breaker of worlds." When an incarnation of the Catalyst Comet appeared in Orgalorg's time, Orgalorg sought to absorb it and gain its power. Abraham Lincoln did not want this to happen and sent Grob Gob Glob Grod to strike him down. Grob Gob Glob Grod incapacitated Orgalorg with his sword, and Orgalorg fell to Earth where he was "compressed into a more powerless form." As the grandmother is telling the last line of the story, Orgalorg can be seen gradually transforming into Gunter as he falls to Earth. A few moments later, an image of Gunter is projected into the sky above the unknown planet.
Back on Earth, Gunter seems to snap out of the trance that caused him to build the wooden cutouts and signal the unknown planet, and the beam of light emitting from his brain disappears. He grabs an icicle and smashes the cutouts. After they are destroyed, he is shown remembering various moments of himself living throughout human history after falling to Earth.
The Ice King wakes up and chides Gunter for breaking wood on his floor. Noticing Gunter's exposed brain, he pushes it back into his head and covers it with a wrapping of pink cloth. Ice King holds up a mirror to show Gunter how he looks, and in Gunter's mind his reflection appears to morph into Orgalorg.
- Lumpy Space Princess
- Grob Gob Glob Grod (flashback)
- Abraham Lincoln (flashback)
- Hand Snow Golem
- Ice Toad
- Walrus #5
- Walrus #1
- The alien creatures' designs are all scrapped ideas for Orgalorg's design.
- This marks the fifth episode (not counting the gender-swap episodes) in which neither Finn nor Jake make an appearance, let alone are even mentioned, the first being "Princess Day," second being "Evergreen," third being "Friends Forever," and fourth being "Be Sweet."
- This marks the first time that Finn and Jake have not appeared and are not mentioned in consecutive episodes. This is the third time Jake has not been in consecutive episodes, the first being "Rattleballs" and "The Red Throne," and the second being "Lemonhope Part 1" and "Lemonhope Part 2." However, he was mentioned in the first two episodes.
- They have not appeared since "You Forgot Your Floaties." It is unknown if they are back to their normal selves, which may be why they are absent.
- The first of the wooden figures that Gunter draws resembles Abraham Lincoln while another of the wooden figures resembles Death.
- Abraham Lincoln's face also seems to play a central role in both parts of Gunter's ritual, in the activation incantation, and in the wooden figures as it is the final figure that connects Gunter and the rest of the system.
- The scene where Gunter's ritual beams travel throughout space to get to its destination is a reference to the anime franchise, Robotech.
- The music during the ritual seems to be inspired by old horror/sci-fi videogames like Fade to Black (1992) or X-COM: Terror from the Deep (1995)
- Ice King seems to have gotten a new drum set since his old one was destroyed in "Friends Forever."
- This episode fully confirms Hunson Abadeer's accusation in "It Came from the Nightosphere" of Gunter being possibly one of the most evil beings in Ooo, due to his true identity as Orgalorg.
- In the episode "Gold Stars," Orgalorg can be seen along side with the other monsters in Lich's speech.
- The Hand Snow Golem from "Still" reappears in this episode.
- In the slide showing Gunter's past, the 16th picture shows them doing farming near some sort of below ground bunker. This could possibly have been sometime soon after the Mushroom War because the next two slides show Gunter taking a boat to what could have been the Land of Ooo and stumbling upon the icy biome that the Ice King resides in.
- Gunter might have lived on another continent of Earth before coming to Ooo because he is seen sailing an empty ocean towards a large land mass.
- Gunter, Abraham Lincoln, Grob Gob Glob Grod and the yellow comet are revealed to be older than the rise of human civilization on earth.
- When Ice King extends his hand to grab the cake slice inside the fridge, only five penguins (including Gunter) can be seen, whereas there were seven in previous shots.
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- ↑ http://www.cartoonnetwork.com/shows/adventuretime/characters/index.html
- ↑ http://www.reddit.com/r/adventuretime/comments/2wlec4/upcoming_episode_titles_spoilers_sort_of/
- ↑ http://www.tvguide.com/tvshows/adventure-time/episodes/304498/
- ↑ http://www.crunchyroll.com/anime-news/2015/06/06/adventure-time-sneaks-in-robotech-homage