The first thing Ren Denver registered was the smell.
Rot. Copper. Something burnt underneath it all, like a fire that had died three days ago and left only ash.
He opened his eyes.
Grey sky. Cracked concrete above him — part of a collapsed ceiling, half hanging, the rest already on the ground. Dust floated in the thin light coming through a gap in the wall to his left. He was on his back, lying on rubble, and every part of his body felt like it had been stuffed into a bag and thrown off a building.
Where—
He sat up too fast. The world tilted hard. He pressed one hand to the ground and waited for it to stop moving. Broken tile. Grit. His palm came back grey with dust and a thin smear of dried blood that wasn't fresh enough to be his.
Think. Where are you? What happened?
He didn't know.
The last thing he remembered was — nothing. Not nothing like a blank, but nothing like the memory wasn't there at all. Like someone had reached in and pulled it out clean.
His name was Ren Denver. He was twenty-six. He repaired industrial machinery for a living. He knew what a torque rating was and how to read a pressure gauge and exactly how much force it took to strip a bolt.
Everything past that was gone.
He scanned the room. Large space, gutted — industrial, maybe a factory floor at some point. Rusted support beams. Three collapsed sections of roof. Debris everywhere. One exit on the far wall, a gap where a door used to be, the frame still standing but the door itself gone.
He pushed himself to his feet. His legs held. Sore, but functional.
"Okay. Okay. Find out where you are. Then figure out the rest."
He took three steps toward the exit and stopped.
The sound came from the corridor beyond the door gap. Something dragging. Uneven rhythm — a step, a drag, a pause. Step. Drag. Pause.
Ren's chest tightened.
He turned and looked for a weapon. Any weapon.
Industrial cutter. Half buried under a section of fallen ceiling panel, handle sticking out at an angle. He crossed the room, crouched, grabbed it, pulled. It came free with a scrape of concrete. Heavy — maybe three kilograms, cutting jaw at the front, grip worn smooth from use. No power, no fuel line attached. Dead tool. But the jaw was still solid steel and the body was built to take punishment.
It would have to do.
The dragging sound got closer.
Ren pressed his back against the wall beside the door gap and held the cutter in both hands, jaw forward. His breathing was too loud. He could hear it. He tried to slow it down and made it worse.
Come on. Focus. Whatever it is, it moves slow. You can hear it.
A hand came through the door gap first.
Grey skin. Nails black and split. The fingers curled around the broken door frame and pulled, and the rest of it came through — a man, or what used to be one. Tall, heavy build, dressed in the torn remnants of a work uniform. Most of the left side of its face was missing. The exposed muscle underneath had dried to a dark reddish-black. Both eyes were pale and unfocused, moving without tracking, like a camera with no signal.
It hadn't seen him yet.
Ren's mouth went dry.
Zombie. The word surfaced from somewhere automatic and useless. His brain offering a label while the rest of him tried to figure out what to do with it. It moved slow but it was already inside the room, turning, sweeping those blank eyes across the space.
It found him.
The sound it made wasn't a groan. It was something flatter than that — a long exhale with no breath behind it, mechanical and wrong. It lurched toward him and the speed was worse than the sound, faster than the dragging suggested, covering ground in that broken lurching walk.
Ren swung.
He aimed for the head and caught the shoulder instead. The cutter hit with a crack he felt up both arms. The thing didn't go down. It staggered sideways into the wall, bounced off it, came back. One hand caught his forearm. The grip was iron — no hesitation, no pain reflex, just locked on.
It's not going to let go — break the grip — elbow, use the elbow—
He drove his elbow into its arm joint, angled downward. The grip broke. He stepped back, reset, and this time he didn't swing. He stepped into it and drove the flat front edge of the cutter directly into its skull with both hands behind the push, using his whole body.
The skull gave.
The thing dropped.
Ren stepped back and stood there, chest heaving, the cutter hanging at his side. He was looking at the body without really seeing it. His hands were shaking. He noticed that from somewhere outside himself, clinical and distant, like it was happening to someone else.
You're alive. It's down. Keep moving.
He looked at the cutter.
The cutting jaw had cracked on the second impact — a hairline fracture running through the steel, compromising the structural integrity of the head. One more solid hit and it would break apart. He was already holding a weapon that was one fight away from being scrap.
He needed something better.
He stared at the cutter and thought: If I had the right tools and something to reinforce this—
The text appeared in the center of his vision.
No screen. No device. Just text, floating there like it was part of the air.
[ ASSIMILATION SYSTEM — INITIALIZED ]
[ Object detected: Industrial Cutter — Structural integrity: 34% ]
[ Upgrade available. Confirm? ]
Ren didn't move.
His first thought was that he had a head injury. His second thought was that head injuries didn't produce legible text with consistent formatting.
The text waited.
He said, quietly, to no one: "Confirm."
[ Assimilating... ]
[ Material analysis complete ]
[ Reinforcing jaw housing — stress fracture sealed ]
[ Grip weight redistributed — impact force increased by 22% ]
[ Upgrade complete ]
The cutter changed in his hands. Not dramatically — no glow, no heat, no noise. The fracture in the jaw simply closed, the steel surface smoothing as if the crack had never been there. The grip shifted slightly in his palm, the weight redistributing forward.
He gripped it. Solid. Noticeably more solid than thirty seconds ago.
Ren looked at the body on the floor. Then he looked at the door gap. Then he looked at the cutter in his hands.
He didn't understand what had just happened. He understood that it worked. He understood that there were almost certainly more of those things outside.
And he understood that whatever this world was, whatever had brought him here, standing still was not going to keep him alive.
He started moving toward the door.