Chapter Summaries

Killer found that entering Snowdin restored the mental torment and higher determination she had experienced during her past killings, while returning to the Ruins made them disappear. She suspected the areas belonged to different space-times, but an invisible boundary stopped her from reaching Waterfall, leaving her to investigate Snowdin further.

• Killer entered Snowdin and was overwhelmed by apparitions and white noise, while her determination rose to about a quarter of Chara's.
• Killer returned to the Ruins and found that her determination fell and the apparitions vanished, then confirmed that leaving the Ruins brought them back.
• Killer reached the boundary between Snowdin and Waterfall and struck an invisible wall, losing a small amount of HP.
• Killer decided to return to Snowdin and investigate further.

Error Insanity searched for Murder after a spatial anomaly scattered him and Killer, but Fatel Error attacked her and mistook her for someone responsible for her suffering. Error Insanity faked her own death to escape and continued toward Murder.

• Error Insanity detected that someone had interfered with her portal and set out to find Murder and Killer.
• Fatel Error attacked Error Insanity, blaming her for what had happened and trying to mark her with code.
• Error Insanity found that her red threads could not restrain Fatel Error and used her powers to slow her before striking her.
• Error Insanity pretended to cut off her own head, tricking Fatel Error into leaving to resume restoring Papyrus.
• Error Insanity's head reattached after Fatel Error left, and she continued toward Murder.

Sans recorded the group’s preparations for a future mission and described a frightening night of unexplained darkness. Afterward, Outer and DLG had no answers, while Sans asked Papyrus to help keep his record.

• Sans, Outer, and DLG completed formalities for business they could proceed with once the appointed date arrived.
• Sans rented three village rooms with Outer’s funds and began keeping a record during their wait.
• Sans noticed the night had become unnaturally dark and found Outer and DLG lying silent and seemingly lifeless in their rooms.
• Papyrus told Sans not to worry, and Sans returned to his room to write about his unease.
• Outer woke Sans the next morning, but she and DLG had no explanation for his experience.
• Sans asked Papyrus to help keep the record and met Outer’s and DLG’s Papyruses.

Killer entered a strange Hotland that seemed to belong to a different point in time, where her determination increased and the BYD human's voice and illusions weakened. She realized the connected spaces held clues to a puzzle and found a seed packet, concluding that the materials needed to plant it were in earlier spaces.

• Killer opened the inn door and found that it led to a strangely cool Hotland instead of its familiar interior.
• Killer examined her soul, noticed her determination had increased, and found that the BYD human was no longer speaking in her ear.
• Killer theorized that the Ruins, Snowdin, and Hotland represented different stages of her life and different times.
• Killer bypassed the Jumping Board puzzles, found a Mystery Seed Packet, and returned to her starting location.
• Killer reasoned that she needed to find sunlight, water, and nutrients in the earlier spaces to plant the seed.

Error Insanity entered a vast mass of chaos to find and rescue Murder, discovering it contained his soul and connections to other worlds. After leaping inside, she accidentally made someone beneath her vanish and came face-to-face with a familiar figure.

• Error Insanity used Switch to inspect the chaos and saw Murder's soul trapped within it, along with source lines connected to other worlds.
• Error Insanity cut a rift in space, confirmed Murder's location, and jumped into the chaos.
• Error Insanity landed on someone, and a bizarre space-time error made the being beneath her vanish.
• A bone spike nearly struck Error Insanity, but its attacker stopped when she opened her eyes.
• Error Insanity recognized the figure before her and asked if they were Insanity.

Error Insanity tried to rescue Murder from the inn but discovered she could not pass through its spatial rift. After investigating the motionless DLG and OuterDust and learning that Murder woke to find them corpse-like each night, she used Switch, identified a clue in his journal, and left to investigate further.

• Error Insanity opened a spatial rift to rescue Murder, but he could not pass through it.
• Error Insanity examined the motionless DLG and OuterDust and found that the inn interfered with her skills.
• Murder told Error Insanity that he woke each night to find the other living beings motionless, though they seemed fine the next day.
• Error Insanity used Switch, handed Murder his journal, and said she had figured out the key to the mystery.
• Error Insanity gave Murder a red thread and told him to wrap it around the Papyrus skull, then vanished from the inn.
• Murder returned DLG and OuterDust to their rooms and wondered what was in the journal.

Killer returned to the Ruins and searched for a clue that would advance the plot, suspecting the seeds she had received were involved. She uncovered a hidden difference among the leaf-covered pits, but the chapter ended before she could investigate it.

• Killer returned to the Ruins room where she had first appeared and reasoned that the spaces might be fragments of past experiences.
• Chara spoke to Killer, whose determination and ability to sense save files had weakened.
• Killer muted Chara and decided to test whether fertilizer was connected to the seeds and her progress.
• Killer used her knife and magic to blast the leaves off the pit puzzle, destroying the wall behind it.
• Killer noticed that one pit was slightly different from the others.

Murder tested the mysterious Script and then investigated OuterDust and DLG, who had awakened in a disturbing state. A hooded figure called DOM appeared in his room and prepared to explain what had been happening around him.

• Murder opened the Script and found sketches that appeared to update in real time and show glimpses of the future.
• Murder found OuterDust and DLG standing silently outside his room, then used Bone Manipulation to disable them when they attacked.
• Murder searched for the source of the strange events, and a hooded figure appeared on his bed and praised his reasoning.
• DOM restrained her overwhelming pressure, revealed a dark face with four glowing eyes, and invited Murder to hear about recent events.

Killer landed in a strange, beautiful realm and found it inhabited by ferocious rabbits. After carving up one rabbit that attacked her, she tried to sneak past the swarm, which had spotted her.

• Killer landed in a peaceful green-and-blue space and followed a passage to a wooden door.
• Killer kicked the door apart and was met by a cacophony of rabbit cries.
• Killer welcomed the fluffy rabbits, but one lunged at her ear and she sliced it into pieces with her knife.
• Killer dodged a mass of rabbits that piled up where she had been standing and attacked one another in a frenzy.
• Killer tried to sneak past the rabbits, then awkwardly asked them to pretend they had not seen her.

DOM explained that she had altered space to contact Murder, whose weak connection to the fictional world made him a promising candidate to leave it. She revealed that she had sent marked beings to search for things that did not fit the world, and had finally found Murder.

• DOM apologized to Murder for interfering with reality because her abilities made it difficult to contact him.
• DOM explained that her deep connection to the fictional space made beings with weaker connections hard for her to find.
• DOM admitted that the promise of leaving the world through luck was a ploy to motivate the others.
• DOM explained that she had marked the beings she sent to wreak havoc so she could find anything that might help them escape.
• DOM told Murder that he was the being she had been searching for and that she had finally managed to make him see her.

Killer fought her way through corridors overrun by rabbits and escaped into a space-time boundary, where she collected soil and seeds. A black dragon awakened and began destroying the tranquil landscape, leaving Killer facing a boss fight while exhausted.

• Killer fought through the rabbit-infested corridors while her magic power dwindled and she passed the corpses of soldiers.
• Killer escaped through a doorway into a boundary between space-times and examined the peaceful landscape.
• Killer used Gravity Manipulation to gather soil, made a bone flowerpot, and stored the seeds and soil inside it.
• A black lump unfurled into an enormous Western dragon, whose awakening turned the landscape into a lava-filled battlefield.
• Killer cried out that she needed time to recover before fighting the dragon.

DOM asked Murder to carry her soul fragments out of the world so she could get every Sans out, and offered to send him away. She stopped time and marked his pitch-black counterpart, leaving Murder free to find him before they departed.

• DOM explained that Murder could leave and asked him to take her fragments out of the world.
• DOM gave Murder a fragment from the soul of the goat who became a god, along with another fragment she pulled from herself.
• DOM told Murder that her interference with his mind would cause no repercussions for his attacks on his two counterparts.
• Murder asked to find his friend, and DOM agreed to wait while he did so.
• DOM stopped time for everything in the world on a lower plane, marked Murder's pitch-black counterpart, and waited on his bed.
• Murder set out to find the black-haired riddle-spewer.

Killer used her speed and daggers to exploit the black dragon’s weak point and defeat it. She stood beside its corpse, visibly exhausted.

• Killer launched three bones and used them as stepping stones to approach the black dragon.
• The black dragon shook the ground and blasted Killer with powerful gusts, knocking her off balance.
• Killer used the swirling dust and wind as cover to appear behind the dragon and stab its weak point.
• Killer’s attacks grew faster as she repeatedly slashed the dragon, overwhelming its defenses.
• The black dragon collapsed, and Killer stood beside its corpse, breathing raggedly.

Error Insanity fought Fatel Error at the World's Edge, but Fatel Error's corrupted code and Tear Threads left her unable to escape. As Fatel Error reached to touch her, Error Insanity accepted that she had run out of options.

• Fatel Error identified Error Insanity as the black-haired girl and attacked her with a code block that overwhelmed her defense.
• Fatel Error tore off Error Insanity's arm, prompting her to activate adrenaline flood mode and repair herself while evading further attacks.
• Fatel Error repeatedly pursued Error Insanity, warning that a single touch would end everything.
• Error Insanity used her scream to trigger one of Fatel Error's dialogue lines and tried to escape, but Tear Threads had trapped her feet.
• Fatel Error reached out to touch Error Insanity, who sighed and resigned herself to her fate.

Murder revealed that Fatal Error’s attempt to consume him triggered a fatal error tied to the death of a counterpart outside his timeline. He unleashed a powerful shock wave and warned Fatal Error that her mistake could not be undone.

• Fatal Error struck Murder while Error Insanity watched, but Murder’s code began reversing the damage to him.
• Murder reassured Error Insanity, who crashed shortly afterward.
• Murder told Fatal Error that his timeline research had uncovered a trait involving counterparts killed outside their own timelines.
• Murder’s code reversed Fatal Error’s consumption and trapped her hand against him.
• Murder released a devastating shock wave and told Fatal Error that her mistake was impossible to undo.

Killer recovered from her battle with the black dragon, discovered that its corpse had become a Dragon Dagger and accidentally absorbed it, then forced open the flower portal with Determination Magic. She was sucked through the portal in an exhausted state.

• Killer found a Dragon Dagger where the black dragon's corpse had been and accidentally absorbed it into her body.
• Killer searched for an escape from the lava-scorched island and suspected the untouched patch of flowers was a portal.
• Killer struck the flowers and detected a barrier created by chaotic Space Magic.
• Killer used a spinning dagger technique powered by Determination Magic to tear open the flower portal.
• Killer was pulled through the portal while exhausted and screaming.

DMurder absorbed part of a god's power, gained resistance to code attacks, and escaped Fatal Error by opening a Portal while carrying Error Insanity. Fatal Error gave up pursuing him because the Portal led toward DOM, who was stronger than her.

• DMurder survived Fatal Error's attack and absorbed the fragment of godly power within him, transforming and gaining the ability to manipulate timelines.
• Fatal Error attacked DMurder with a code block, but he reflected it and claimed that code-based attacks no longer worked on him.
• DMurder offered to hand Error Insanity over to Fatal Error in exchange for being allowed to leave, and Fatal Error agreed.
• DMurder rebooted Error Insanity, then opened a Portal that sent Fatal Error flying and escaped with her.
• Fatal Error realized the Portal led toward DOM, abandoned her pursuit, and left through a Space-Time Rift.

DMurder and Error Insanity traveled with DOM’s help to an Anti-Void, while Killer stumbled into an ancient battlefield and drew the attention of its skeletons.

• DOM sent DMurder and Error Insanity through a Space-Time Rift and warned DMurder not to lose her soul fragment.
• DMurder recognized that DOM had arranged his encounter with Fatal Error and Error Insanity.
• DOM used her magic to send them to an Anti-Void, where their connection to the world would be severed.
• Killer arrived at an ancient battlefield while searching for supplies and fought off several skeletons.
• Killer’s attack drew the battlefield skeletons’ glowing red eyes toward her.

Killer dreamed that she destroyed a world while trying to escape a blood-sacrifice ritual, then woke on a mound of skeletons with bone spikes growing from her body. When her magic touched the spikes, they became tiny versions of Killer that devoured the skeletons, leaving her to realize she had mutated.

• Killer dreamed that she triggered a blood-sacrifice ritual at a stone stele and could not escape its boundaries.
• Killer smashed the stele, the ground, and then the world before waking from the dream.
• Killer found jagged bone spikes growing from her body as she climbed out of a pile of skeletons.
• Killer's magic flowed through the spikes, which detached and turned into tiny mini-Killers that ate the skeletons.
• Killer realized she had undergone a genetic mutation.

Killer used her mutated ability to turn bones into skeletons, gathered fertilizer, and grew giant plants on Shock Waves to escape the sealed Chaos Space. She reunited with Murder and Insanity, and the trio continued their travels and redemption after DOM freed Dusttale Sanses from many timelines.

• Killer explained that the Dragon Dagger's mutation let her create little skeletons that absorbed bones.
• Killer gathered bones and skeletons at the Ancient Battlefield with Shock Waves and blasted them into fertilizer.
• Killer returned the Pillar to its original room and melted Snowdin's snow with determination magic to get water.
• Killer loaded soil and materials into Shock Waves, grew giant stalks, and climbed out of the sealed Chaos Space.
• Murder and Insanity found Killer in the gaps between the multiverse, and the three returned to Insanity's space for a vacation before continuing their travels.
• DOM used fragments on Murder's body and her old scheme to destroy the barrier and fictional Cultivation World, freeing Dusttale Sanses from many timelines.