The containment doors opened without breaking the glass.
Mk3 watched the locking runes withdraw from the nearest frame. Beyond it, the corridor remained empty. The guard assigned to that section had completed his last pass less than a minute earlier, and the next rotation would not begin until the lamps above the inspection desk changed color.
They had learned the interval while waiting.
Mk4 stepped out first. She stopped beside the door and listened to the machinery beneath the floor, separating its regular cycle from the sounds of people moving farther up the dungeon.
No alarm answered the open cell.
Mk3 followed, turning to inspect the threshold before leaving it behind. There were no cracks in the glass, no damaged hinges, no residue from an attack. The system had released them. Anyone looking for a forced escape would begin with the wrong question.
The other occupied cubes stood empty as well.
Above them, the palace was attending to queens, visitors, and a calamity bearer who had become the subject of almost every urgent instruction. Guards were being called away from routine duties. Messages passed downward with less detail than the people receiving them wanted.
The dolls had waited until those interruptions repeated often enough to become useful.
Now they moved deeper into the dungeon.
Mk1 joined them beyond the inspection junction.
Her place near the queen was empty. The instruction that had kept her there had been overtaken by the need reaching through the string, and she had left while the audience above drew attention toward the dais.
Mk2 arrived from the upper levels with both hands held close against her body.
Neither spoke until the four stood together beyond the reach of the last guard station.
A change passed through the connection.
Mk1 turned her head toward the ceiling. The stone concealed every room above, but it did not conceal the strain coming from Derpy.
“Friend is frustrated,” she said. “I could return and assist him.”
Mk4 shook her head.
“He wants Original repaired. That is why we are here.”
“He is still distressed.”
“Returning without her will not change the reason.”
Mk1 considered that. The impulse to turn back remained, visible in the angle of her feet.
Mk2 moved her hands enough for the others to see what she carried.
Riven lay across her palms, small and torn, her head resting against one thumb. The damage from Derpy’s electricity remained dark along her seams.
“Primary objective is restoration,” Mk2 said.
Mk3 looked from Riven to the corridor ahead.
“We should improve our protection capabilities while the equipment is available.”
“After access is secured,” Mk4 replied.
Mk1 faced forward again.
The four continued in the same measured stride. Their footsteps fell together, a sound that could have belonged to a single heavier machine moving through the lower levels.
Mechanical doors lined the corridor. Most had no viewing panels. Their identifiers were stamped above recessed locks, worn by years of repair crews carrying parts through passages never intended for public inspection.
Behind those doors, the empire had rebuilt the things it sent back into service.
The dolls stopped at the final reinforced entrance.
Mk4 placed a hand against its control surface.
The door withdrew into the wall.
Five magitech stations stood around the center of the chamber.
Each held a repair cradle surrounded by jointed tools, suspended cables, and rings of dormant runes. Storage frames occupied the spaces between them. Replacement limbs hung beside opened torsos. Fine instruments rested in brackets small enough to handle a single thread without disturbing the seam around it.
Mk3 examined the nearest station before approaching its controls.
Mk1 looked toward the fifth.
Its housing stood open, leaving the cradle visible beneath an arrangement of suspended parts and disconnected tools. The absence of a body inside made it no less recognizable as a place designed to take one apart.
Mk4 turned to Mk2.
“Did the extraction from the queen’s custody succeed without detection?”
“No human detection,” Mk2 reported. “Original was recovered after the transfer from the personal chambers. The audience continued.”
She made no claim about what the queens would notice afterward. The important fact was the small body in her hands.
Mk3 brought the fifth station’s support frame down to its lowest position.
“Place her here.”
Mk2 stepped closer and lowered Riven into the cradle.
She did not release her immediately. One torn arm rested at an angle that would catch beneath the support if the mechanism closed. Mk2 adjusted it, then moved the damaged fabric away from a locking edge.
Only when Riven lay clear of the fittings did she withdraw her hands.
The chamber began to hum.
Light ran beneath the cradle, passing through the markings in its base before rising along the surrounding tool arms. Instruments turned toward the damaged doll. A narrow band of illumination crossed her from head to foot.
The first voice came from above them.
“Ruin Series units Mk1 through Mk4 detected. Repair authorization requested.”
A second scan passed over Riven.
“Unidentified doll detected in Chamber Five.”
Mk1 looked toward the central display.
“Her name is Riven.”
The system repeated its finding.
“Unidentified doll detected. Authorization required.”
Mk4 approached the control column.
“Override protocol. Gamma File 1523. Authorize repair of Original Series: Riven.”
The hum lowered in pitch.
Mk3 watched the doors. Mk2 remained beside the fifth cradle, close enough to intervene if any tool moved before the override was accepted.
Runes passed across the control column, paused, then rearranged.
“Authorization approved.”
The brackets around Riven’s cradle adjusted to her size.
“Local designation assigned: Mk5. Hybrid classification: Original—Riven.”
Mk1’s eyes moved from the new label to the doll inside the station.
“She is Original.”
“Original designation retained in hybrid classification,” the machine answered.
It offered the sentence with no recognition of why the distinction mattered.
Mk4 studied the active repair sequence.
“The name is recorded. Proceed.”
Above the fifth station, a countdown appeared.
08:57
The first tool lowered toward Riven’s damaged seam.
Mk1, Mk2, and Mk3 entered their own stations.
Each settled into a cradle as the supports adjusted around her frame. None resisted the positioning, but all three kept their eyes open until the instruments had moved within reach.
Mk4 remained outside.
Her station activated without closing, casting an empty outline against the wall. She placed herself between the repair circle and the entrance, where she could watch both the door and the work being done to Riven.
“External equipment assembly for Unit Mk4,” the system announced. “Guard position maintained.”
Mk4 gave a small nod.
The chamber doors sealed behind her.
Light gathered around all five stations. Three housings closed around the units inside them; the fifth enclosed Riven in a narrower field, leaving the tools visible through the glow. Mk4’s open station turned its assembly arms outward.
The system began processing the requested modifications.
“Unit Mk1. Magical enhancement. Chain scythe integration. Advanced battle tactics.”
The requests remained on the display long enough for Mk1 to inspect them.
“Approved,” the machine said.
New runes stitched themselves into her frame. They followed existing seams before branching into places the original pattern had left unused. A weapon assembly rotated beside the cradle, laying out the components of a chain scythe while streams of tactical data passed across the inside of the housing.
Mk1 followed the changing instructions with her eyes.
She had already rewritten enough of herself to choose whose commands mattered. Now the chamber offered ways to carry those choices farther.
At the next station, Mk2’s limbs were held apart while the system mapped the strain left by the pursuit.
“Unit Mk2. Speed and agility upgrade. Shock impulse brass knuckles.”
“Approved.”
Controlled electrical channels brightened along her arms and legs. They stayed within their assigned paths, passing through the new structures without jumping into the surrounding equipment.
Mk4 watched them briefly.
The memory of Riven absorbing Derpy’s discharge remained close in the shared sequence of events. This current obeyed the frame built for it. That difference was part of what they had come to obtain.
Brass knuckles formed around Mk2’s hands, their impulse mechanisms settling beneath the striking surfaces.
The third station began dismantling its existing weapon fittings.
“Unit Mk3. Weapon replacement. Import magical arm-mounted cannons.”
“Approved.”
Mk3 watched the old components detach. The system drew them away from her arms and broke them down inside the cradle’s field.
New assemblies formed in layers. Mounting points locked into place first, followed by the arcane structures that would carry and direct the discharge. The cannons remained aligned along her arms while the tools checked each connection.
Mk4 turned toward the entrance at a faint sound beyond it.
A mechanical cycle completed somewhere down the corridor. No footsteps followed.
Her station continued working.
“Unit Mk4. Secondary sword. Magic shield. Energy-draining blade enhancements.”
“Approved.”
A second sword took shape beside the first assembly. Runes spread along both blades, then dimmed until they were visible only when the light moved across them. The shield appeared as a spectral plane and rotated through several angles before holding steady.
Mk4 did not reach for any of it yet.
She looked back at Riven.
The small form was almost hidden now, surrounded by tools working along burned seams. The machine did not describe the damage as sacrifice, loyalty, or fear. It identified failures and began repairing them.
That was enough for the moment.
Above Chamber Five, the timer continued descending.
The next announcement came in a different register.
“Ruin Series upgrade package. Initiating Sister-Series tracking protocols.”
Mk4 turned fully toward the central column.
The chamber walls filled with archival text. Names appeared between diagrams and blocks of sealed material, some records complete enough to display a classification, others reduced to titles above inaccessible fields.
A notice opened across the largest surface.
SISTER-SERIES — CHAOS-ALIGNED COUNTERPARTS
STATUS: HOSTILE DOCTRINE — ARCHIVAL CONSENSUS
FULL ORIGIN RECORDS SEALED
DEITY-DRAGON ARCHIVES — RESTRICTED ACCESS
The repair equipment continued moving beneath the warning.
Mk4 read the words without accepting them as an order. Hostile doctrine was what the archive called them. The origin records that might explain the classification remained closed.
One by one, the names resolved beneath it.
Pyria — Sister-Series counterpart to Pyro.
Thalassa — Sister-Series counterpart to Tempest.
Mystique — Sister-Series counterpart to Phantasm.
Umbria — Sister-Series counterpart to Blight Vein.
Quintessa — Sister-Series counterpart to Marionette.
Oriana — Sister-Series counterpart to Eco.
The final entry occupied a separate field.
Ember-Within-Ash — Counter-Book to Celica’s Embers.
“Seven records identified in elven historical archives,” the system announced. “Current locations unknown.”
Mk4 looked toward Chamber Five. Riven remained motionless beneath the work lights.
“Retain the records,” she said.
“Records retained. Origin access remains restricted.”
The names stayed visible while another search opened below them.
“Identifying active calamity books within detection range.”
The chamber darkened around the displays. Power shifted through the floor, feeding a process older than the current repair requests.
Mk4 waited.
The first location appeared.
Pyro — Elven Empire.
Then the next.
Blight Vein — Elven Empire.
Two further entries followed separately, whatever had happened to their physical vessels above.
Phantasm — Elven Empire.
Celica’s Embers — Elven Empire.
Mk4 held her attention on the search. Those presences belonged to connections the units had already encountered.
The final result did not.
Eco — Elven Empire.
No bearer’s name appeared beneath it. No chamber, street, or route gave the location greater precision.
The system marked the scan complete.
Mk4 read the fifth result again.
Above them, Derpy wanted Riven restored. The dolls had come below to answer that need. The repair system had supplied a new fact none of them had requested.
Another calamity book was somewhere inside the empire.
The archival displays dimmed as the repair cycle entered its next stage.
Mk1’s housing became opaque first. Mk2’s followed, then Mk3’s, concealing the work being completed inside. Chamber Five sealed around Riven until only the small status lights remained visible at its base.
Mk4’s equipment waited in the open assembly field.
She stayed by the entrance.
The room no longer offered a view of her sisters. She could hear the tools moving, the quiet changes in power, and the occasional click of a mechanism reaching its assigned position.
The string remained present.
Derpy’s distress had not disappeared.
Mk4 looked toward the timer instead of returning to him without Riven.
The count continued.
Beyond the door, the dungeon settled into another patrol interval. The empty containment cubes would eventually be found. Someone would report them, someone would demand an explanation, and orders would begin moving down through the palace again.
Inside the repair chamber, the system required no further permission.
It was still carrying out the authorization it had accepted.