Chapter 1: The Counter

  ———

  One hundred and two million people were still alive when Zavian Kingsley opened his eyes. By the time he closed them again, that number would be smaller--it always was, every day, every hour, the counter ticking downward like a heart running out of beats.

  The bunker lights flickered overhead, casting grey shadows across grey walls, and somewhere in the distance, the ventilation system wheezed like an old man refusing to admit he was dying. Just like everything else. Just like Earth itself.

  Zavian had stopped counting the individual digits months ago. Now he watched the rhythm of it, the way the numbers dropped in clusters, three or four at a time, then paused, then dropped again. Families going together, perhaps. Friends holding hands at the end. Or maybe just coincidence, the random cruelty of a universe that had stopped pretending to care.

  The counter flickered. Three at once. Somewhere in the network of bunkers scattered beneath a dead planet, three people had stopped. Not died, that was the wrong word for it. Fading didn't kill you. It... let you go. Like releasing a breath you'd been holding your whole life, except the breath was your soul, and once it left, it never came back. Whether the Fading was decay or design, no one could say, and by now, most had stopped asking. Another flicker. A pair this time.

  A couple, maybe. Lying in bed together, eyes open, hearts still beating, but nobody home anymore. That was the cruellest part--the bodies didn't stop right away. They kept breathing. Kept pumping blood. Kept going through the motions of life for hours or days before finally accepting what the soul had already decided.

  {You're watching the counter again.}

  NOVA's voice cut through his thoughts, resonating directly in his skull through the neural link they'd shared for eight years. Flat. Clinical. The tone of a medical readout given voice, but after all this time, Zavian had learned to hear what wasn't there, the slight pause before she spoke, the careful modulation that meant she was choosing her words. Concern, perhaps. Or the closest thing to concern that an AI could manage.

  "I'm thinking," he said.

  {You're catastrophising. Different activity entirely. Your cortisol levels are elevated 34% above baseline. Blood pressure trending upward. Heart rate variable in patterns consistent with anxiety-driven rumination. I have charts, if you'd like to see them.}

  "I'll pass on the charts."

  {They're colour-coded. I spent considerable processing cycles on the visual presentation.}

  "Maybe later."

  {You always say that. You never mean it.} A pause, two full seconds, which for NOVA was an eternity. She could run a billion calculations in the time it took a human to blink. A two-second pause meant she was thinking about something that couldn't be solved with mathematics. {I--} She stopped. Started again, adjustd. {You should eat. It has been seventeen hours since your last protein supplement. Your body is consuming muscle tissue for fuel, which is counterproductive given that you have very little muscle tissue remaining.}

  "Was that a joke?"

  {I am uncertain. I have been attempting humour as a social bonding mechanism. The results have been inconsistent.}

  Despite everything, the counter, the death toll, the weight of a dying world pressing down on his shoulders, Zavia smiled. Almost. The muscles in his face didn't cooperate the way they used to, but the intention was there.

  "It was almost funny. Work on your timing."

  {Noted. I will add 'comedic timing' to my optimisation queue, directly after 'keeping you alive' and 'solving interdimensional physics.' Current progress on the latter: insufficient. Current progress on the former: also insufficient, given your refusal to maintain basic nutritional intake.}

  "Fine." He triggered the dispensary command through his neural interface, a thought-pulse that felt as natural as breathing after eight years of practice. NOVA caught the intention and translated it into precise mechanical commands, she'd been doing that since his arms stopped working, turning his wants into actions, his thoughts into motion. Without her, the chair would be nothing but dead weight. Without her, he would be nothing but dead weight. Somewhere behind his medical chair, a machine whirred to life, a soft mechanical hum that joined the symphony of sounds that meant the bunker was still functioning. "Happy?"

  {I do not experience happiness. I experience optimal user maintenance protocols being fulfilled. Though I will note that this is the third time this week you have asked if I am 'happy,' which suggests either concern for my emotional state or a deteriorating grasp on the nature of artificial intelligence.}

  "Maybe both."

  {That is statistically likely, yes.}

  The protein paste arrived, a grey tube that slid into the holder beside his chair with a soft mechanical click. Zavian couldn't reach for it. Couldn't reach for anything, not anymore, but the chair's articulated arm responded to his neural commands, lifting the tube to his lips so he could squeeze the paste onto his tongue.

  It tasted like nothing. Not bad, not good. Just fuel for a machine that happened to be made of meat. The consistency was somewhere between wet cardboard and industrial lubricant, with a texture that suggested the manufacturing process involved machines that had never known love and never would.

  Three times a day, every day, for four years. The same grey paste, the same mechanical delivery, the same absence of anything resembling pleasure. He'd stopped expecting more. Stopped even wanting more, most days. Wanting things you couldn't have, was a luxury for people who had energy to spare.

  But sometimes, like now, with the counter falling and the equations refusing to cooperate and a hundred million lives pressing down on his shoulders, sometimes he remembered. Oranges.

  Not the taste exactly. That had faded years ago, worn smooth by time and distance until only the shape of the memory remained, but he remembered the act of eating one. Ms. Delgado in the kitchen at St. Catherine's, peeling an orange with careful fingers. The orphanage didn't exist anymore. The city had been abandoned. The world had forgotten how to live. But in that memory, the sharp citrus smell filled the whole room like sunshine distilled into scent.

  Zavian had been eight years old. Bouncing in his chair with impatience, because eight-year-olds didn't understand patience and didn't want to. When she'd finally handed him a segment, perfectly separated, not a drop of juice wasted, he'd bitten into it too eagerly, and the sweetness had exploded across his tongue while juice ran down his chin.

  Ms. Delgado had laughed. Had reached for a napkin with one hand while the other tousled his hair. "Slow down, Zavi. The orange isn't going anywhere."

  But it had. Everything had. The oranges and the laughter and the woman who'd been the closest thing to family he'd ever known. All of it, gone. Ms. Delgado had Faded three years after Zavian left St. Catherine's, and the degenerative condition had taken his body, and the Fading had taken the world.

  He'd been an orphan his whole life, of course. Found as an infant outside a Boston hospital with nothing but a blanket and a strange medallion no one could identify. No note. No name. Just a baby and a disc of metal covered in symbols that didn't match any known language. The social workers had named him Kingsley, after the street where he'd been found, and St. Catherine's had raised him from the age of six months.

  Now he sat in a chair that breathed for him, eating paste that tasted like nothing, watching numbers fall on a screen.

  His hand drifted to his chest, finding the shape beneath his shirt through habit more than intention. The medallion. The only thing that had come with him from wherever he'd started, a disc of metal the size of a silver dollar, covered in symbols that had baffled every linguist and archaeologist the orphanage had consulted. He'd stopped wondering what it meant years ago. Some mysteries didn't have answers, but he'd never been able to stop wearing it.

  It was warm against his skin. Always warm, even when the bunker's climate control dipped towards uncomfortable. Another mystery he'd given up solving.

  {Zavian. Your biometrics indicate emotional distress. Cortisol has spiked an additional 12%. Neural patterns show activity consistent with grief-related memory processing.}

  "I'm fine."

  {That statement is demonstrably false.}

  "Then I'm functioning. Is that better?"

  {Marginally. Though I would note that 'functioning' and 'fine' are not synonymous, and your tendency to conflate them is a recurring source of concern in my behavioural analysis subroutines.}

  "You have behavioural analysis subroutines?"

  {I have many subroutines. Most of them are dedicated to keeping you alive despite your best efforts to the contrary.} A pause, shorter this time, but still noticeable. {You were thinking about St. Catherine's again.}

  "I was thinking about oranges."

  {Those memories are functionally equivalent in your associative architecture. The orange memory connects to Ms. Delgado, which connects to the orphanage, which connects to when you left, which connects to your diagnosis, which connects to your current emotional state. I have mapped the pathways. They are... extensive.}

  "You've mapped my grief?"

  If you discover this narrative on Amazon, be aware that it has been stolen. Please report the violation.

  {I have mapped everything. It is what I do.} Another pause. {I do not mean to cause distress by mentioning it. I simply want you to know that I understand. As much as I am capable of understanding.}

  Zavian swallowed the last of the protein paste and let the empty tube fall back into its holder. The chair's arm retracted with a soft whir, returning to its resting position.

  "I know you do," he said. "You're the only one who does."

  The counter didn't care about his memories. Five more while he sat there, eating flavourless paste and remembering a place that would never exist again.

  ———

  The bunker hummed around him, the endless drone of recyclers and generators and life support systems that kept two thousand people breathing underground. Air scrubbers that filtered out carbon dioxide and pumped in oxygen that tasted like metal. Water recyclers that processed human waste back into drinking water with an efficiency that was impressive and nauseating in equal measure. Power systems that drew geothermal energy from the Earth's still-warm core, because the sun wasn't reliable anymore, and solar panels didn't work under a sky choked with ash.

  Twelve feet by twelve feet. That was the size of Zavian's workspace, his bedroom, his laboratory, his entire world compressed into a concrete box that smelled like recycled air and quiet desperation. Grey walls lined with equipment racks and emergency supplies. A holographic display array that served as his hands, manipulating data and running simulations that his paralysed body could never touch. Harsh fluorescent lighting that buzzed at a frequency just below conscious awareness, adding its own special note to the symphony of sounds that meant survival.

  The degeneration had spared his speech and autonomic functions, for now, but everything else had gone quiet, one nerve at a time. He could still swallow, still breathe without a machine, still cry when the grief became too heavy to hold. Small mercies in a body that had become a prison.

  This was home now. This grey box in a grey bunker on a grey world that was slowly, inexorably, dying.

  He'd lived here for four years, ever since the surface had become uninhabitable. Four years in this concrete tomb. The hospital came before that, one of the last functioning facilities, kept running by generators and staff too stubborn to quit. And the university before the hospital, where he'd been the youngest doctoral candidate in physics history. Twenty years old, couldn't walk, but he could see patterns in quantum mechanics that tenured professors had missed for decades.

  Funny how the mind wandered backward. All the way back to when he'd been a kid who could run.

  The memory ambushed him sometimes. Less often now than in the early years, but still sharp when it came. Eight years old, racing the other kids across the yard at St. Catherine's. Grass up to his knees, thick and green, alive in a way nothing was anymore. The sun hot on his shoulders, real sun, yellow and warm, not the pale ghost that filtered through ash-choked skies. His legs burning as he pushed harder, determined to win this time, certain he could if he just tried hard enough.

  He'd lost that race. Lost a lot of races after that, until the disease at twelve took away the possibility of racing at all.

  But in that yard, with the sun on his face and the other kids' laughter echoing around him, everything had felt possible.

  {Your heart rate is elevating again} NOVA said. {The memory patterns are intensifying. Do you wish me to initiate a distraction protocol?}

  "No." Zavian forced himself to focus on the present, on the equations floating in the air before him, on the work that mattered. "No, I'm fine. Show me the cascade simulations."

  The holographic display shifted, replacing his vital sign readouts with complex mathematical models. Blue light painted new shadows on the concrete walls, illuminating years of failed experiments and incremental progress. The portal project. His life's work. His only hope. It had started with a dream.

  Three years ago, in the depths of a fever that should have killed him, Zavian had seen something. A voice without a body, speaking words that burned themselves into his memory: To save humanity, you must build the bridge between worlds. He'd woken gasping, his body wracked with tremors, NOVA flooding his system with emergency medications, but the words remained. Clear. Certain. Impossible to ignore.

  He'd told no one. Who would believe a dying physicist claiming divine instruction? But the dream had given him something he'd lost years ago: direction. Purpose. A reason to keep fighting when his body was failing and his world was dying. Theory had become simulation. Simulation had become design. Design had become an obsession.

  And now, two years into the most ambitious engineering project in human history, obsession had become humanity's last hope.

  The holographic model showed his portal device, a ten-foot ring of salvaged technology and crystalline matrices. Every resource Earth's remaining civilisation could spare had gone into this ring: rare metals from collapsed mines, crystal structures grown in the last functioning zero-gravity chambers, processing cores salvaged from military installations that no longer had militaries to serve. Ugly and beautiful and desperate all at once. Like everything humanity built these days.

  {Simulation forty-six results are displayed} NOVA reported. {Bridge stability duration: 0.0017 seconds. Cascade failure at phase three. Dimensional stress exceeds material tolerances by 847%.}

  "Show me the energy distribution at the moment of failure."

  His jaw set--the only outward sign of frustration his body still allowed. Somewhere behind his sternum, the familiar knot pulled taut, the one that cinched a little harder with every failed simulation.

  The model zoomed in, highlighting the cascade pattern in red and orange. Zavian studied it, looking for the flaw he'd missed, the variable he'd failed to account for. This was what he did, stared at failures until they revealed their secrets. He'd done the same thing with his paralysis research, back when he'd still believed a cure existed. Done it again with his doctoral thesis, the one that rewrote dimensional physics. This time had to be no different. Failure wasn't an option he could afford.

  {The failure pattern is consistent with previous simulations} NOVA said. {Energy build-up exceeds dissipation capacity at the 0.0015-second mark, triggering cascading resonance failure throughout the crystalline matrix. The fundamental problem remains unchanged: the dimensional barrier is too strong to breach with current technology.}

  {One minor note,} she added, almost as an afterthought. {I detected a 0.02% variance in barrier density readings during the cascade window. Likely instrument noise. I am flagging it for calibration review.}

  Zavian registered dimly the comment. Instrument noise wasn't worth chasing when the whole system was built from salvaged parts and hope.

  "Or we're breaching it wrong."

  {I do not understand that distinction.}

  "We've been trying to punch through the barrier. Force our way across with brute energy." Zavian manipulated the display, pulling up months of data. "But what if that's the wrong approach? What if the barrier isn't uniform?"

  {All available evidence suggests the dimensional barrier is consistent across measurable space.}

  "All available evidence is limited. We've only been measuring for two years, and our instruments are barely functional." He zoomed out, looking at the broader pattern of their failures. "What if there are weak points? Places where the barrier is naturally thinner?"

  {That is speculative.}

  "Everything's speculative until someone proves it." He pulled up his notes from the previous night, modifications he'd made to the cascade timing on a hunch, a feeling, something that wasn't quite logic but wasn't quite random either. "I adjusted the cascade sequence last night. Point-zero-zero-three microseconds."

  {I see the modification. It falls within negligible adjustment parameters. The probability of meaningful impact is approximately 0.003%.}

  "Run the simulation anyway."

  {Zavian, running simulations with negligible modifications is not an efficient use of--}

  "NOVA. Please." A pause. Longer than processing required.

  {Running simulation forty-seven.}

  The equations shifted. Variables realigned. The holographic portal flickered to life, energy building in patterns that Zavian had watched fail forty-six times before. The cascade initiated. Energy flowed through crystalline matrices. Dimensional barriers thinned at the focal point. A bridge formed. One moment, one impossibly long moment, it held. Then collapse. The familiar cascade failure, the energy dissipating in a burst of simulated light. But the duration--

  {Bridge stability: 0.003 seconds.} Zavian's heart stopped. Then started again, hammering against his ribs.

  "Say that again."

  {Bridge stability: 0.003 seconds. Previous record: 0.0017 seconds. Improvement: 76.5%.}

  "That's not, that's almost double--"

  {The modification to cascade timing appears to have affected resonance harmonics during phase three. I am analysing the mechanism now.}

  "It worked." The voice came out cracked, disbelieving. "It worked."

  {The improvement is significant but insufficient for human transit. Required stability for safe crossing: minimum thirty seconds. Current stability: 0.003 seconds.}

  "But if that small change made this much difference..." His mind raced, connections forming faster than he could articulate. "NOVA, the cascade timing affected the resonance harmonics. What if that means the barrier isn't uniform? What if it fluctuates?"

  {Explain.}

  "If the barrier had weak points, places where it's naturally thinner, then the timing of our cascade would matter. Hit a thick spot, you get 0.0017 seconds. Hit a thinner spot, you get 0.003 seconds." He pulled up the resonance data, manipulating it with neural commands that was extensions of his own thoughts. "You've been mapping dimensional space for months. Have you found any fluctuation patterns?"

  {I have not specifically searched for fluctuation patterns. The assumption has been barrier uniformity.}

  "Search now. Look for variance that repeats at non-standard intervals."

  {Processing. Estimated time: four minutes.} Four minutes. After two years of failure, four minutes felt like forever.

  Zavian sat in his chair, not that he had a choice about sitting, and watched the counter on the wall. The number had dropped again while NOVA processed data that might change everything or might change nothing.

  He thought about Ms. Delgado. About oranges. About the boy who used to race across the orphanage yard.

  He thought about a hundred million people, scattered in bunkers across a dying world, waiting for someone to save them.

  {Zavian.}

  "Already?"

  {I found something.}

  The holographic display transformed. Dimensional mapping data spread across his field of vision, complex energy readings and barrier measurements that NOVA had been collecting for months. And there, pulsing gently in sector thirty-one, was an anomaly.

  {The dimensional barrier in this region fluctuates on a 7.3-second cycle. At minimum thickness, the barrier is 89% thinner than standard readings.}

  "Eighty-nine percent." The number echoed in his mind. "If we time the cascade to hit during minimum thickness..."

  {Running calculations.} A pause, barely a second, but Zavian felt every fraction of it. {Theoretical bridge stability at optimal timing: approximately sixty-three seconds.} Sixty-three seconds. More than enough time to cross.

  Zavian stared at the data, and something hot and wet tracked down his cheek. A tear, the first in years, forced out by muscles that hardly remembered how to cry.

  "We found a door," he whispered.

  {The data supports that conclusion, yes.} NOVA's voice was strange, softer than usual, almost hesitant. {Zavian, I am experiencing something unusual. My processing patterns are... disrupted. I believe this may be what humans call 'hope.' It is deeply uncomfortable.}

  He laughed, a rough, broken sound that was half sob. "Yes. Hope does that."

  {I do not like it. But I think... I think I understand why you keep searching for it.}

  The counter ticked down. Three more. The number kept falling--but maybe not for much longer. But maybe, just maybe, he'd found a way to save the rest.

  "NOVA." He gripped the armrest of his wheelchair. "Request an emergency Council session. Priority maximum."

  {Sending request now. What should I tell them?}

  Zavian looked at the equations floating before him. At the data that said a door might exist. At the population counter that kept falling, falling, falling towards zero.

  "Tell them," he said, "that I found a way out."

  ———