Due to the nature of this series's storytelling, all spoilers are unmarked. It is strongly recommended to watch it in full before proceeding.

At first, the channel follows Ash as they explore supposed unused content in the game's first two chapters, with varying degrees of completion. However, each finding slowly but surely ends up tugging at hints of something sinister, slowly resolving into a coherent story that, to Ash's horror, far exceeds the expectations of what should be an average menagerie of scrapped content.
The Light World is not as it seems. As the line between it and the Dark Fountains slowly withers away past the point of recognition, Kris must determine what is real and what is mere fantasy... even if that reality is nothing like they understand it. Or, as Ash soon learns, as we understand it.
The series was broken up into 21 minisodes, each releasing daily after the first.
Tropes:
- Aborted Arc: Various Deltarune plot points are ignored here.
- Perhaps the most glaring example is whatever is going on with Dess. The only time "December" is spoken in the whole series is in regards to the literal month. Whether she existed or was just as much an Imaginary Friend as her sister turned out to be in this timeline was never elaborated on.
- The Voice that guided the player through the Gonermaker sequence, as well as whoever hijacked the connection to direct the player to possessing Kris, are never given any attention.
- As the series predated Chapters 3 and 4 of Deltarune, any depiction of the Roaring Knight or the Titans would have been
Outdated by Canon, but it is strange that they never showed up during the Roaring section (their role is replaced by Utgard-Loki). - The Weird Route is supplanted entirely by the later events of the series; it only shows up very briefly in "15_Doorway", when Ash was able to reactivate the Warp Door in Queen's Mansion after Spamton takes over, and glitches their way to a long passage, exiting to find the Roaring in progress in Hometown. When Noelle is next seen, her corruption by the Roaring wouldn't have been out of place in either route, and Noelle becoming stronger is pretty much irrelevant.
- Adaptational Jerkass: Asriel hates Kris with every fiber of his being in this continuity, intentionally driving them away to the point where the two fighting at the lake is initially framed as one of them drowning, and even still is so emotionally damaging that it is the point in time Utgarde-Loki exploits to create the Light World.
- Adaptational Villainy: Ralsei is twisted into representing Kris's desire to stay in Utgarde-Loki's creation, and keeps them out of the hole leading to their domain.
- All Just a Dream: Sort of. The story follows the Creepypasta formula of "work is actually the elaborate delusion of its protagonist," but Utgarde-Loki explains it's only possible because of their intervention, using Kris to create what is from the being's perspective a Dark World of their own.
- Arc Words: "You're making me uncomfortable. Please leave me alone." It's revealed to be the first two lines of an extremely toxic outburst by Asriel against Kris for being themselves, which traumatized them to the point where it echoes constantly in the deepest corners of the Dark Worlds.
- Ambiguous Situation:
- Kris and Asriel's fight at the lake is represented in the former's mindscape through drowning imagery, but it's unclear if any of it is actually literal. While Utgarde-Loki and several of the cracks in reality insist Asriel only ran away, Ralsei (who is a manifestation of Kris's denial in this series) is present in "10_lake," which is about Kris attempting to cross the lake itself, or at least imagining themselves as such.
- Asriel claims Kris calls themselves "[Asriel's] brother." As the only other reference to Kris as a "him" is confirmed a typo and thus remains non-binary, it's unknown if this is also the case or if Asriel, dripping with malice as he is in this continuity, intentionally misgendered Kris to hurt them further. Kris could have also said it themselves, given that they were a younger child at the time with either a simpler vocabulary and/or uncertainty of their identity.
- Angelic Abomination: Utgarde-Loki, a strange shapeshifting being (initially) named after an illusionist from Norse Mythology who managed to convince Thor and Loki that he was greater than them in power. They are responsible for creating the Light World by making a pact with Kris, appearing as an angelic figure when Kris attempts to convince them to collapse the realm, and they state there are more of their kind too detached from the main story to be of any benefit to the human.
- Battle in the Center of the Mind: While it's unclear if this is the case or not, the dialogue produced when inspecting the hole leading to Utgarde-Loki's area suggests that it is within Kris's own mind, and the depths at the bottom of the hole is where the fight against Utgarde-Loki takes place.There is a hole at the centre of your mind. It is a vastness that is too great for you to consider. Even with conviction, the body reels at the thought of descension.
- Because You Were Nice to Me: The key to convincing Utgarde-Loki to collapse the Light World is Kris being unable to bring themselves to hurt the being. Utgarde-Loki sees this as a Heel Realization, and ends their pact with Kris on the condition they do not attempt to seek them out again, for their brethren would not understand them the way they do.
- Bittersweet Ending: Kris realizes that their delusions and their pact with Utgarde-Loki are causing them and whoever else more harm than good, and convinces Utgarde-Loki to undo its effects. However, they are still an abandoned child with no real resources besides a cell phone with Toriel's number and the fake contact representing Susie, and the series ends on them wandering off into Hometown's woods, leaving their fate unknown.
- Disowned Sibling: Asriel sees Kris as nothing more than someone Toriel just so happens to be hosting, and belittles them for being different and believing otherwise. Toriel herself, however, has no knowledge of this until some time before the finale, when it is revealed that she had Kris transferred to a new foster family, presumably to put an end to the friction.
- Dramatic Irony: The ending reveals Toriel was never informed of any of the inciting events that led to Utgarde-Loki finding Kris, and still believes Asriel loved them and another family managed to pick them up after the Dreemurrs had to relinquish them.
- Driven to Madness: The most common symptom of the series's portrayal of the Roaring is individuals suddenly going completely insane from the breakdown of reality. Burgerpants and Monster Kid are mostly unaffected, but they have to deal with physical distortions and everyone else respectively.
- Freak Out: As soon as Ash realizes the unused content is telling its own story that fundamentally rewrites the nature of the Deltarune universe, they become increasingly horrified, demonstrated by their notes becoming less and less formal.Description of "16_roaring town?": nothing's making sense.
- Gecko Ending: The final episodes are one to Deltarune as a whole, when the player glitches their way from the chapter 2 Weird Route straight into the Roaring.
- Imaginary Friend: Kris's classmates are inanimate objects they used as toys in a desperate craving for stimulation, brought to life by Utgarde-Loki's pact.
- Immunity Disability: In a sense. Burgerpants resists the madness that everyone else in Hometown suffers, but he explicitly states that he wishes he hadn't.
- Lotus-Eater Machine: What the Light World really is in this series, a physical manifestation of Kris's trauma from being left behind by the Dreemurrs. Through Utgarde-Loki, it provides Kris a life they never actually had... but when it starts to fall apart, and upsetting elements of their real life begin bleeding in, Kris slowly comes to realize just how hollow it actually is.
- Mental Story: The series recontextualizes Deltarune as an elaborate delusion of Kris coping with Parental Abandonment through the help of a Deal with the Devil, with each episode slowly hinting at how they got here before it eventually falls apart.
- Not So Stoic: When the Roaring happens, Carol has a moment of this- with the icy mayor barricading Noelle away from the house because she's just that scared of her daughter.
- Parental Abandonment: Toriel intended to transfer Kris to another foster home at some point in their life, after they had already began to experience extreme friction with Asriel. Somehow, Kris was lost in the process in a way that Toriel was not aware of, causing them to spiral into despair and eventually meet Utgarde-Loki. Although probably not intentional, Toriel didn't do much to ensure the transfer went ahead as planned, as Kris's call with her at the end of the series reveals that she believes the transfer went off without a hitch, even though Kris is now alone and abandoned.
- Prophecy Twist: The Roaring is caused when, as Ralsei describes it, "the Fountain's power becomes too strong" and "the flow of darkness runs wild." As Utgarde-Loki soon reveals, the Light World is itself a gigantic Dark World formed from them targeting Kris's trauma, meaning that Kris's maladaptive and uncontrollable imagination alone (i.e. the darkness that causes Dark Worlds to animate objects) is enough to trigger it.
- Reality Is Out to Lunch: The Roaring, which here is caused by the Light World (itself the same type of constructed reality as the Dark Worlds) no longer being able to sustain itself due to Kris's addled mental state. Rather than the dramatic apocalypse spoken of in the prophecy, The Roaring is shown to be more akin to a festering decay that affects the entire world, from its physical state down to the individual minds of its inhabitants. The world slowly loses its color, most Lightners go completely insane, and minor physical distortions quickly pile up until they completely overtake their surroundings.
- Recursive Reality: The Light World is itself a realm operating on the same rules as the Dark Fountains, created when Utgarde-Loki opened a similar structure from Kris's emotional trauma; the Roaring is in truth its total breakdown once this becomes unsustainable. After Kris and Utgarde-Loki agree to close it, the world reverts to Earth as it actually is.
- Red Baron: Utgarde-Loki goes by several bynames and titles, which change over the course of his fight, presented both in flavour text and menu text. These include 'The Lie of the Land', 'The Roiling Field of Flowers', 'Vacuous thing ending time', 'Weeping Scar Tissue', 'The Final Falsehood', 'The Veil', 'Glory of Coronation', 'The Nightmare', 'The Spinning Wheel', 'The Cycle' and 'The Liar'.
- Shout-Out: A couple to Coronation Day. In “16_roaring town?”, Asgores flower shop is renamed to “Coronation Day”. In “20_unused revelation”, Utgarde-Loki’s boss theme
uses the same horns as “a rage” in its beginning. - Talkative Loon: Once the Roaring takes effect, several characters go on long, auto-advancing rants that are usually disturbing in nature.Noelle: "Oh, hey Kris! Mom locked me out of the house, she says that she's scared of me. But it's okay, I've been sleeping on the cold concrete sidewalk... Eating small ants, flies, grasshoppers, moths, cicadas... My teeth have been rotting away in my mouth, they hurt all the time. I drink the water from the lake and it makes my stomach writhe as if it were alive and trying to escape my body through my throat. The flesh has been twisted into a form of pure overarching agony that I am trapped inside until further notice. [turns away] You should go home Kris. Your family is waiting for you."
- Un-person: Every appearance of the Dreemurrs or a person representing them (with the exception of Asgore) is replaced with a large X.
- Villain of Another Story: Just before Utgarde-Loki leaves and collapses the Light World, they mention to Kris that there are others like them who are unaware of the story's events. This is why they do not want Kris to try and beseech them again, as doing so might attract one of these other beings which they surmise would be unsympathetic to Kris.
