Norris and Muffet descended into Wheyflow Grotto with the gait of someone unsure whether the enemy would be gravity, time, or their own nerves. The way down was a sloped tunnel, carious and slick as the inside of a throat. Every step sunk her boots into cheesecloth mats laced over puddles of translucent whey. The edges of her robe dragged, leaving a trail in the dust that caught the blue-green glow from fungal veins stretching overhead.

  There was no proper darkness in the Grotto. Instead, the air suffocated with a light so weak and sour it made every shadow look bruised. The bioluminescent growths weren’t just decorations; they formed a crude nervous system for the cave, mapping out all lines of movement, every branching corridor, each dead end. Stewart’s mind immediately set about converting the patterns into a tactical grid. Muffet’s body shivered with recognition—this was a kill zone, plain and simple.

  She hugged the left wall, following the rule of minimizing exposure, even when the threat wasn’t clear. The wall was cold and soft, slicked with a film that stuck to the fingers and refused to let go. She scraped off a sample into one of the glass vials, watching as it coiled on itself like a living thing. The label on the vial was still blank, but Stewart thumbed in “GROTTO BIOFILM—UNCLASSIFIED” on the inventory screen and set it back in the belt loop with an audible click.

  The air was worse down here. Stale, yes, but also heavy—like breathing through a wet rag. The silence was almost total except for the occasional drip of liquid, amplified by the architecture of the cave until it sounded like a gunshot. Each echo came at the wrong interval, as if the cave couldn’t quite remember what time was.

  Stewart’s sense of distance began to warp. Thirty meters in, the corridor narrowed, walls squeezing close enough that her shoulders brushed on each side. The fungal veins grew brighter, and the air buzzed with a low-frequency hum. Muffet’s hands were sweating now, despite the cold. She rolled her shoulders, trying to bleed off the tension, but it only made her more aware of the space closing in.

  A new UI overlay stuttered in at the periphery of vision:

  ENVIRONMENTAL HAZARD: AIR QUALITY DEGRADATION

  ADVISORY: LIMIT YOUR TIME IN THE GROTTO TO CONTAMINATION

  #

  The reprieve lasted less than two minutes.

  Muffet/Norris sat on the cold rock, knees drawn up, every nerve running the diagnostic loop Stewart had drilled in back when fear was an indulgence rather than a system parameter. The air in the alcove was drier than the Grotto proper, but each breath still caught on the aftertaste of panic. The fear gauge, while stabilized, hovered just beneath the “Threshold” mark—a line drawn in angry red, labeled by the UI with a word that did not exist in any normal dictionary: TERRORPOINT.

  Stewart tried to inventory the rest. Hands: still trembling, but usable. Legs: tense, but steady. Vision: slightly warped at the edges, colors shifted toward blue. Fine. He could work with that.

  Muffet rechecked her vials. The blue crystal, now labeled with a cautious “CAUTION,” was inert for now. The other samples—biofilm, wheyflora, and curd—rested in their glass tubes, beads of condensation running lazy tracks down the inside. She clicked them into the bandolier and cycled through the next actions: stand, orient, scan. The passage ahead glimmered with a faint, shifting light—nothing like the bioluminescent veins from before. This was more like the reflection off a knife edge, or the pulse of a defective LED.

  She moved toward it, driven less by curiosity than by the certainty that standing still in this place was as good as giving up. The tunnel here was less organic, more angular—segments that looked almost as if they’d been bored out by machine, not by nature or time. Every few steps, the light warped, growing brighter, then flickering out altogether. The effect was disorienting in a way that made Stewart’s tactical mind bristle.

  Halfway down the tunnel, she lost track of her own footsteps. The echo returned, at first normal, then lagging, then somehow ahead of her, like the memory of a step made before she’d actually moved. The fear gauge twitched upward, even as Muffet clenched her jaw and pushed forward.

  The light at the end of the tunnel coalesced into a shape. For a second, Stewart thought it was a reflection, maybe a trick of the brain compensating for the warped environment. But as the shape resolved, he realized it was a person. Not a real one—an echo, a fragment, something projected from memory or code.

  The figure was tall, robed, hairless, with wrists marked by the same white scars as her own. Its movements were twitchy, stuttered, never quite aligning with the rhythm of the world around it. The eyes, where they should have been, glitched between blue and white, each blink resetting the face to something slightly different.

  It turned to Muffet and spoke—not in words, but in the hiss and pop of a radio scanning through static. Still, she understood.

  “Echo,” Stewart said. “That’s new.”

  The UI overlaid the figure with a string of text:

  ECHO #42 – SELF-REPLICANT – RECURSION EVENT

  Support the creativity of authors by visiting Royal Road for this novel and more.

  “Of course it is,” Muffet muttered, and watched as the figure began to pace, tracing a tight circle in the dust. Every few seconds, it flicked its fingers in a familiar gesture, as if grinding something between thumb and forefinger. Stewart’s memory fired: old laboratory days, prepping slides, cataloging spores.

  The Echo bared its hands, palms up, and exposed the same network of scars Muffet wore now. It spoke again, this time in clipped syllables, almost like a programming language. “Bind. Transmute. Fail. Again. Bind—” It looped, never finishing the line. The fear gauge pulsed upward, each repetition spiking it by another percent.

  Stewart intervened: “It’s a past failure mechanic. Visualizes the previous attempt at the scenario. Don’t engage unless necessary.”

  But Muffet stepped forward anyway, driven by some combination of scientific rigor and the grim need to know what she was up against. She raised her left hand in a mirror of the Echo, palm open. The figure did the same. For a moment, the world seemed to pause, waiting to see who would move first.

  Muffet tried to speak, but the only sound was a dry rasp in her throat. The Echo reached out, two fingers extended, and Muffet matched the motion. When they touched, the world flickered, then righted itself. Her hand passed through the Echo’s, but for a split second, a cold, electric charge ran up her arm.

  The figure repeated its mantra, now with more urgency: “Bind. Transmute. Fail. Again—”

  And then it was gone. The tunnel snapped back to its usual geometry, the weird light extinguished. But where the Echo had touched her, Muffet now felt a sticky, oily residue, clinging to her skin. She pulled back the sleeve of her robe and saw a smear of color—blue-black, iridescent, not quite liquid, not quite powder.

  Stewart scanned the sensation: “Unknown chemical. Possible mnemonic agent. May be residual from previous test subject or simulated artifact.”

  Muffet instinctively scraped the substance into an empty vial, fingers working with their own urgency. The moment it entered the glass, the UI chimed:

  MEMORY FRAGMENT ACQUIRED

  CYCLE DATA: INCOMPLETE

  She watched the label update, then stared at the smear left on her palm. It tingled, a cross between numbing and burning, and she flexed the hand several times, watching the sensation travel up the tendons toward her wrist.

  The urge to analyze warred with the urge to panic. Stewart’s voice came in again, steadier now: “Breathe. Control. Log it, but don’t obsess.”

  She complied, forcing three measured breaths, counting down the seconds. The fear gauge eased a tick lower.

  Muffet shook the hand, then wiped it on the least contaminated part of her robe. The residue didn’t quite come off, but the burning receded, leaving only a mild itch. She inspected the vial—still inert, no reaction—then slipped it into her kit.

  The tunnel behind her was still empty. The tunnel ahead beckoned, with the memory of the Echo lingering in the blue-tinged afterimage at the corner of her sight.

  Stewart logged the event with a simple, damning line: “Echo Encounter #42: Failure persistent. Recommend avoidance, but data retrieval may be necessary for future success.”

  Muffet/Norris nodded once, the motion more reflex than agreement. She straightened, checked her resources, and pressed forward, scientific curiosity now laced with a cold, predatory resolve.

  The world shifted again, just slightly, and she realized that the hallucination hadn’t weakened her. It had, in a way, inoculated her.

  The next time the system tried to break her, she’d know where to look for the fault lines.

  #

  She almost missed it. The only reason the tuffet stood out was its shape—too regular, too deliberate, against the backdrop of geological accident. Where the walls of the Grotto were all smooth erosion and cheese-rind folds, the tuffet squatted with intent, half-sunken into a pile of desiccated biofilm at the far end of the alcove.

  Muffet/Norris approached it with skepticism. She ran a slow perimeter, checking for traps, for footprints, for any sign that it was bait rather than artifact. None—just the staleness of abandonment and the dust of time. Stewart logged the tuffet as “ANOMALOUS OBJECT: UNCLAIMED,” and guided her to circle once more before committing.

  The tuffet itself was a disappointment in the flesh: less a seat, more a mass of fibrous matting, stuffed tight and covered in a threadbare remnant of synthetic velvet. The surface was so worn that the color was impossible to name—somewhere between dead leaf and rotted cream. The only sign of personality came from the embroidery at one corner, a sigil stitched in coarse red thread. Stewart recognized the pattern immediately: the Ouroboros, this time more literal, a spider biting its own abdomen, looped in on itself with no beginning or end.

  Muffet set her kit down and crouched, running her hands over the musty fabric. The tactile feedback was so specific it nearly broke her immersion—there was grit here, and the subtle resistance of a spring just about to give. She pressed, and the center of the tuffet depressed half an inch, then held. She dug in with both hands, rolling the thing over, and exposed the underside.

  Here, the stains were unmistakable. Old blood, or something that wanted to read as blood. At least three distinct patches, each ringed with a faint, iridescent residue. She scraped at one with a scalpel, collecting the flake into a fresh slide. The moment the sample entered the tube, the memory hit.

  It wasn’t like the hallucination in the tunnel. This came with heat, an explosive spike of temperature radiating from the hand up the forearm, across the chest and into the skull. With it: the sharp, sulfuric reek of burning solvents, the slap of glass shattering on stone, a voice not her own yelling, “Not enough binder!—” and then the rush of oxygen as something combusted, white-hot, in a room smaller than this alcove.

  A UI prompt cut across her vision, half-translucent, trembling at the edges:

  MEMORY FRAGMENT ACQUIRED — CYCLE DATA: INCOMPLETE

  She clutched her wrist, fingers hunting for damage, but the heat was already gone. In its place was a faint ache, an echo of the burn that had never happened in this body.

  Stewart took over, cataloging with cold efficiency: “Prior Muffet, probable test subject. Incident matches known pattern of failure cascade. Recommend increased caution with binder ratios and air-fuel mixtures in confined spaces.”

  Muffet couldn’t help but grin, teeth bared in the dark. The lab accident was so cliché it almost comforted her. She logged the data, then turned her attention back to the tuffet. If a previous self had failed here, she wanted to understand why.

  She lifted the tuffet with both hands. The weight was off—lighter than it should be. She peeled back the bottom lining and found a hollowed-out cavity, stuffed with wads of moldy fabric and, deeper in, a cache of broken vials. The glass was etched with the residue of dozens of failed experiments: acrid, metallic, sweet. She laid each piece out on the ground, careful not to cut herself.

  One vial, still intact, held a single droplet of crimson oil. Stewart recognized it before Muffet could: “Accelerant. Volatile. Probably catalyst for previous event.”

  She pocketed it, sealed the rest, and patted down the tuffet again. Satisfied it was not about to explode, she set it upright and collapsed onto it. The seat was uncomfortable, but it anchored her to the here and now. She lined up her arsenal of vials along the seam, reset the traps on her belt, and pulled the tuffet into a defensive orientation with her back to the wall and eyes on both exits.

  The fear gauge hovered just below critical, but Muffet’s mind was clear. She’d learned two things: first, that the system remembered its failures and recycled them; second, that she was not the first Muffet to pass through this scenario, and likely not the last.

  Stewart summed it up in two words: “Closed loop.”

  She sat there a while, sorting the new data, counting her breaths. The air in the alcove had a sour note, but it was clean enough to think in. She rehearsed the memory of the burn, rolling it over and over, looking for the flaw in the sequence. The answer, when it came, was simple:

  “Too much risk, too little backup,” Stewart mused. “Next time, rig a failsafe. Don’t get cute with the ratios.”

  Muffet nodded, determined. She repacked the samples, wiped her hands, and eyed the tunnel ahead—the Grotto’s throat, still pulsing faintly with fungal light. The tuffet was now a waypoint, a base of operations. She was ready for the next run, and if another Echo appeared, she’d be prepared to dismantle it piece by piece.

  She steadied herself, flexed the fingers that still tingled from the phantom burn, and stepped forward, more resolute than before.

  The cycle would break on her terms, or not at all.