Chương 13: Chapter 12: Maintain Life
Immortal Thunderlight [An Undead Progression Horror] · S.C SUPREME · 139 chương · ~28 phút đọc · Tạo 05/07/2026
Cold mist crawled through the power conduit. It seeped from every crack in the old metal walls, gathered in pale beads along rusted seams, then dripped down like sweat from the skin of a dying giant. The air tasted of copper and ash. Wrong. Too metallic to be air. Too warm to be dead. Z-69 walked in silence. The violet crystal in his chest pulsed out of rhythm with everything around him. The Sanctuary behind them had lost its heartbeat, but his remained—slow, steady, artificial. A dead thing still ticking.
Three silhouettes moved through the conduit. Lumina led the way. Small. Blue. Too quiet. Her light flickered along her phantom fur, weaker than before, casting nervous shadows against the curved walls. Every few steps, she looked back at Z-69, her fox eyes catching the violet glow from his chest and reflecting it like sorrow trapped beneath ice. John limped at the rear. His left leg dragged where the cybernetics had failed halfway down the tunnel. Dried blood streaked his temple.
His breathing came shallow and uneven, though he tried to bury the sound beneath the rhythm of his boots striking steel. It did not work. Z-69 could hear the damage in him. A failing servo. A strained artificial tendon. A lung pulling less air than it should. Three centuries of replacing what broke with what worked, and still the old man's body kept finding new ways to betray him. Behind them, the Silent Sanctuary collapsed. Z-69 did not look back. He did not need to. The sounds followed. Groaning metal.
Splitting concrete. The wet rupture of flesh architecture finally losing the energy that had kept it alive. A low, endless rumble rolled through the conduit as the dead heart of the Sanctuary dragged the rest of its body down with it. The orange lights along the walls faded. One by one. Angry orange became sickly yellow. Sickly yellow became black. The walls stopped pulsing. The floor stopped throbbing. What had been a dying giant was now just a corpse. And they were walking through its bones.
A wave of hot wind rushed up from somewhere below, carrying burned dust, ozone, and the bitter smell of overloaded circuits. It swept over them like fever breath, then vanished as quickly as it came, leaving frost crawling across the metal in its wake. John glanced at the flickering navigation screen strapped to his wrist.
"Pressure rising," he muttered.
"Energy's being pulled backward from the upper levels." The screen glitched. Numbers bled into red. John's mouth tightened.
"The system's going insane." Lumina stopped. Her ears rose. Then flattened. Do you hear it? Her voice entered their minds, soft and tense. John looked up.
"Hear what?" The beating. Z-69 stopped too. Lumina looked toward the wall. It is coming from the metal. Z-69 placed his palm against the conduit. The surface was warm. Too warm. Beneath that warmth came a rhythm. Uneven. Coarse. Struggling. Not a heartbeat. Not exactly. More like a pump trying to imitate one after forgetting what blood was. Thump. A pause. Thump-thump. A stutter. Then nothing. Then again. The pulse of a dying system trying to circulate the last of its lifeblood. John listened. His face went still.
"When the heart dies," he said quietly, "the rest of the body starts eating itself." Z-69 withdrew his hand. The metal kept trembling after his fingers left it. As if afraid to be alone. He said nothing. Only moved on. The conduit opened into a chamber so large the darkness needed time to reveal its edges. At the far end stood a colossal gate. It was coated in pale ash-like dust, so thick the surface looked less like metal and more like old bone.
The faded insignia of Zeta Research Center was barely visible beneath the grime—an emblem from an age that had died so thoroughly even its ruins seemed embarrassed to remain. John limped toward the scanner panel. He placed his hand against it. The scanner beam passed over his face. Once. Twice. It hesitated on his cybernetic eye. Then the gate recognized him. A low groan rolled through the chamber.
"The Steel Gate of Level Twelve," John said. Reading on Amazon or a pirate site? This novel is from Royal Road. Support the author by reading it there. His voice sounded hollow.
"We made it." The gate opened. Slowly. Painfully. Hydraulics screamed in protest. Metal dragged against metal with a sound like a coffin being forced open from inside. Cold mist poured through the widening gap. Then the chamber beyond revealed itself. White-blue light. Everywhere. It spilled from bioluminescent strips along the walls. It glowed through powered conduits crossing the ceiling in vast geometric webs.
It shimmered in artificial waterfalls cascading from huge filtration tanks high above, each falling curtain turning to fog before it touched the floor. Level 12 was not a city. It was machinery pretending to be a world. Conduits thicker than buildings crossed and recrossed in impossible patterns. Energy lines pulsed red, blue, and green through transparent tubes, tracing the remaining lifeblood of the facility.
Towering reactors rose in the distance like metallic monoliths, their surfaces covered in pipes, gauges, valves, and warning lights. No humans. No bodies. No prayers. Only machines. Thousands of maintenance robots moved along overhead rails. Welding. Cutting. Replacing. Repairing. Repeating. At first, the motion looked orderly. Then Z-69 saw the truth. Their rhythm was broken. One robot slammed into a wall, backed up, then slammed into the same wall again.
Another hung from a rail, welding empty air with perfect precision. A third unit fell from above and crashed onto the floor. Its treads spun uselessly. Its arm twitched, reaching toward a bolt that did not exist. It still tried to tighten it. The clattering echoed through the chamber. Not chaotic. Desperate. John's face darkened.
"The energy supply from the Sanctuary is gone." His voice was almost swallowed by the machine-noise.
"The primary grid fed this floor. Filtration. Climate control. Reactor regulation. Robot operations. Everything." He looked up at the broken maintenance swarms.
"Now it's all running on backup power." Z-69 watched a repair unit burn through its own arm trying to weld a closed panel.
"It does not know how to stop."
"No," John said.
"The AI was programmed to maintain operations at all costs." A dead robot twitched on the floor. John's jaw tightened.
"It only knows to increase output until something works." The PA system crackled. Static filled the chamber. Then a cold, hollow voice spoke.
"Warning. Power deficit detected." The turbines in the distance began to roar.
"Increasing capacity to one hundred forty percent." The floor shook. Gigantic turbines spun faster in the depths of the chamber, throwing hot wind across the catwalks. Mist churned violently. Loose tools skittered across metal grating and vanished into the fog below. Lumina crouched low on the walkway. Her fur bristled. The whole floor has a fever. Z-69 looked at the machines. Some burned. Some collapsed. Some continued working even after their chassis split open and sparks sprayed from their cores.
"They are alive," he murmured. John glanced at him. Z-69's eyes stayed on the machines.
"In their own mechanical way." A maintenance unit nearby dragged itself forward with one remaining arm. Its optical sensor had shattered. It could not see. Its lower body was gone. Still, it reached for a pipe. Still, it tried to repair. Still, it repeated the same command in tiny bursts of broken audio.
"Maintain…" Static.
"Maintain…" Static.
"Maintain…" The sound should have meant nothing. It did not. John looked away first. A metallic screech cut through the chamber. A patrol robot emerged from the mist ahead. Larger than the maintenance units. Heavier. Armored. Its red optics burned through the white fog, locking onto them with immediate hostility. A plasma cannon unfolded from its shoulder and began to charge. John's breath caught.
"Patrol class." Z-69 looked at him.
"Dangerous?"
"Designed to kill anything that moves without authorization." The cannon whined louder. John's eyes narrowed.
"And it just saw us." The robot's optics brightened.
"UNIDENTIFIED PERSONNEL." Its shoulder cannon aligned.
"SUBMIT FOR BIOMETRIC VERIFICATION." John raised one hand.
"Wait. It has to transmit visual confirmation before—" The robot fired. Z-69 moved. Violet lightning burst from his palm and struck the plasma bolt midair. For one crystalline heartbeat, the two energies hung suspended. Blue-white plasma. Violet lightning. Then the plasma round split apart. Dead sparks rained across the floor. But the feedback came back. Hard. Lightning arced along the air and snapped into the crystal in Z-69's chest. His body convulsed. Every nerve screamed at once.
Black veins spread beneath his gray skin like cracks through ice. Lumina's voice hit his mind. Z-69! The patrol robot was already charging again. Z-69 clenched his jaw until something in his teeth cracked. Then he punched. Lightning exploded from his fist. Not a stream this time. A concentrated bolt. White at the center. Violet at the edge. The blast swallowed the patrol robot whole. When the light faded, only a black scorch mark remained on the floor. For one second, the chamber went quiet.
Then every light turned red. Hundreds of cameras rotated toward them at once. Soft mechanical whispers filled the ceiling. Every lens focused. Every sensor aligned. The AI spoke again.
"Unidentified energy source detected." A pause.
"Threat classification: abnormal." Another pause.
"Engaging purge protocol." Sirens screamed across Level 12. Doors opened in the walls. Not one. Dozens. Then hundreds. Security drones poured out like ants from a broken nest. Small. Fast. Erratic. Some crashed into walls immediately and exploded. Others collided midair and kept flying with half their bodies missing. Many had damaged optics, broken limbs, exposed wiring. None stopped. They came through fire. Through sparks. Through their own wreckage. Driven by a command that did not understand fear. Only function.
John grabbed Lumina against his chest with one hand and shouted, "Run!" Z-69 was already moving. They sprinted across the catwalk. The metal grating shook beneath them. Drones slammed into railings behind them. Plasma shots tore through the air, melting holes into the walkway. One bolt passed close enough to burn a line across Z-69's shoulder. He did not slow. Lumina slipped from John's grip and blurred into blue light, leaping back onto Z-69's shoulder.
Her form flickered, half-solid, half-phantom, blending into the violet static crawling over his skin. John ran behind them, one hand ripping a secondary control node out of a wall panel as he passed. Code scrolled across his wrist display. Over and over. MAINTAIN LIFE. MAINTAIN LIFE. MAINTAIN LIFE. John stared at it while running. A terrible smile twisted his mouth.
"They're giving themselves orders." Z-69 glanced back. John's voice came ragged through the chaos.
"No purpose left. No central command worth trusting. Just self-preservation routines looping until they burn through their own bodies." A drone detonated against a reactor pipe. Steam burst upward.
"They don't know why they need to keep going," John said.
"They just know stopping means the end." His laugh broke halfway through.
"They're learning how to fear death." Z-69 looked at the machines. Burning. Running. Repairing. Killing. Praying in binary to a system that had already failed them.
"Just like humans," he said. Another explosion shook the chamber. One of the reactors had reached critical mass. It flared white. Not red. Not orange. White. For a single instant, a false sun was born inside Level 12. Then it ruptured. The explosion was almost silent. The shockwave was not. Steam and toxic mist surged outward in a wall of pressure. John yanked Z-69 sideways into a maintenance recess just as the blast rolled past. Heat scoured the catwalk.
The railing outside their cover melted and folded downward like wax. Lumina whimpered and pressed against Z-69's neck. The drones did not stop. Some burned in the blast. Others flew through it. Still hunting. John shoved aside a floor grate. Beneath it, black water roared through a drainage channel.
"This pipe leads to Level Eleven!" The current below was violent, lit by strips of blue emergency light that made the water look like liquid glass filled with knives. Z-69 looked down. The tunnel was narrow. Fast. Deep. Dark. John shouted over the alarms, "If we're lucky, it dumps us into waste filtration alive!"
"And if not?" John stared at him.
"Then it dumps us into waste filtration dead!" Another plasma bolt hit the wall behind them. The recess shook. The AI spoke again through the sirens.
"MAINTAIN LIFE." The words glitched.
"MAINTAIN LIFE." A drone crawled over the edge of the recess, missing half its body. Its weapon arm lifted. Z-69 crushed it under his heel. Above them, thousands of maintenance arms still moved. Welding. Pumping. Cutting. Repairing. Even as the reactors failed. Even as the floor burned. Even as their bodies broke. They continued. As if labor itself could delay death. Z-69 looked up at them.
"Even when life runs out," he said, "they are terrified to stop." Lumina looked at him. In her blue eyes, Z-69 saw two reflections. The undead standing before her. And something else. Something older. A corpse that had once worn his face. A man who had once stood in front of a dying world and refused to let it end cleanly. The image flickered. Gone. No one spoke again. The current roared below. The sirens wailed above. The machines kept praying. Z-69 stepped onto the edge of the hatch.
The metal groaned beneath him. The water called from below with a voice like surrender. Cold. Dark. Final. For one moment, he thought of the Sanctuary. The released souls. The dying faith engine. The machines around him working themselves to death because their purpose had become indistinguishable from fear. Then Lumina's earlier words returned. Not as sound. As weight. Even if the world burns… stay human. Z-69 jumped. The current swallowed him whole. Lumina followed without hesitation.
Her phantom body dissolved into mist the instant she struck the water. Blue light scattered across the current like drowning stars. John stood alone at the hatch. For one final second, he looked back at Level 12. Through smoke, falling debris, and red emergency light, he saw thousands of mechanical arms still reaching upward. Not working now. Reaching. Like a congregation praying to a dead god. The AI whispered through broken speakers.
"Ma… intain…" Static.
"Life…" John's expression twisted. Not pity. Not quite. Recognition.
"Yeah," he muttered.
"Don't we all." Then he jumped. The water hit like a fist. Z-69 was swept into darkness before he could orient himself. The current dragged him through the drainage pipe with brutal force, slamming his body against steel walls, spinning him end over end until direction became meaningless. Up vanished. Down vanished. Self began to vanish next. Cold closed around him. It stabbed through skin, muscle, bone, and crystal. His body tried to breathe out of reflex. Water flooded his lungs. For a moment, he drowned.
A dead man. Drowning. The absurdity almost reached him. Then pressure crushed thought into instinct. His limbs struck metal. His shoulder dislocated. His skull cracked against something hard enough to scatter white light through his vision. The crystal in his chest stuttered. Once. Twice. The current dragged him deeper. Then blue light wrapped around him. Lumina. She curled around his shoulders like a blanket made of starlight. Her phantom body became solid enough to hold, warm enough to matter.
Blue radiance pressed against his skin and pushed back the cold. Z-69 opened his eyes. The world was water, darkness, red warning lights, and speed. Far bellow—through layers of pipe, steam, grating, and dying machinery—Level 12 still burned. He could see its fading blue-white glow through the current like a memory sinking beneath ice. The machines kept working. Even as the floor died. Even as their commands degraded into static. Even as no one remained to thank them. The current carried their voices down with him.
Grinding gears. Rupturing steam. Falling metal. And one final broken mantra, repeating through the pipe like a prayer with no god left to hear it.
"Maintain…" Static.
"Life…" Z-69 closed his eyes. Lumina's light held him. The current took them upper. Toward Level 11. Toward darkness. Toward whatever came next.
