The long-range transmitter took four hours to calibrate.
Vex handled most of it, her fingers moving across the old hardware with the careful precision of someone defusing an explosive, occasionally pausing to consult data pulled from her internal memory. Klem assisted, handing components and cross-referencing frequencies. Leo, who understood approximately nothing about Mesher-grade signal encryption, made himself useful by inventorying the weapons cache and eating a second protein ration that tasted marginally less like cardboard than the first.
By the time the transmitter hummed to life, the underground amber light had taken on the particular quality of mid-afternoon — not that any of them could see the sun from level -3, but Leo had spent enough years in desert outposts to feel time in his bones.
"There," said Vex, stepping back. "Encrypted on a rotating frequency. Helix will detect the transmission eventually, but it will take them at least six hours to isolate the source."
"Then we make it count." Leo pulled up the contact list they'd found in the dead man's files. Three names. Two were corporate informants who were almost certainly dead or compromised by now. The third was a callsign: Rust Crow. Beside it, a frequency and a single note in cramped handwriting — ask for Dara, say the refineries burn clean.
"Poetic," said Klem, reading over his shoulder.
"Desperate," Leo corrected. "There's a difference."
He keyed the transmitter.
Static. Then:
"—whoever you are, you have thirty seconds before I assume you're Helix and stop being polite."
The voice was female, low, roughened by wind and bad weather. Leo could hear engines in the background — large ones, multiple.
"Rust Crow, I'm looking for Dara. The refineries burn clean."
A long pause.
"The refineries haven't burned in three years," the voice said carefully.
"I know. I just came from one."
Another pause. Longer.
"You have coordinates?"
Leo read them off.
"Stay where you are," said the voice. "Don't shoot at anything that lands in the next two hours. And if you're Helix, know that I will personally make your death educational."
The transmission cut.
Klem looked at Leo.
"She sounds like you," she said.
"God help her," he replied.
The vehicle that arrived wasn't a VTOL.
It was a land crawler — a massive, eight-wheeled behemoth assembled from at least four different machine generations, its hull plated with salvaged corporate armor and painted in the rust-red camouflage of the Ash Barrens. It ground to a halt on the refinery's upper platform with the confidence of something that had never once considered the possibility of breaking down.
Leo, Klem, and Vex stood at the entrance. Leo held his plasma rifle low — not aimed, but present. The two Meshers flanked him, visors up, circuits dimmed to resting. They had agreed, before coming up, to make themselves look as unthreatening as possible, which for two military-grade cyborgs with matte black armor and vertical pupils meant approximately the same as a pair of wolves deciding to sit.
The crawler's side hatch opened.
Eight people descended. Armed, desert-worn, moving with the loose-limbed alertness of people who had survived by being faster than their problems. Mixed ages, mixed origins, the kind of group that forms when the alternative is dying alone.
Last out was Dara.
She was compact and angular, somewhere in her late thirties, with close-cropped dark hair going silver at the temples and a face that suggested she had made peace with hard choices long ago. She wore a long coat the color of dried blood over mismatched armor, and she carried no visible weapon, which Leo knew from experience meant she had at least three that weren't visible.
She stopped ten meters out and looked at the three of them with the unhurried assessment of someone who had been surprised before and hadn't enjoyed it.
Her eyes moved from Leo — whom she dismissed quickly as a known variable, human, mercenary type — to Klem, then to Vex. They stayed there.
"Meshers," she said.
"Former," said Klem.
"That word doesn't exist in Helix's vocabulary."
"It does in ours," said Vex.
Dara studied her for a long moment. Then she looked at Leo.
"You did this?"
"They did it themselves," he said. "I was just present."
Something shifted in Dara's expression — not quite softening, but a recalibration. She took three steps forward and looked at Klem directly, the way you look at something you've been told is dangerous and are deciding whether to believe it.
"Show me your compliance node," she said.
Klem reached up and pressed two fingers behind her left ear. A small panel in the skin there glowed — and then she pressed harder, and there was a faint crack, and the glow died.
The people behind Dara stirred.
"She just manually ruptured her own compliance architecture," said a young man near the back, voice caught between alarm and awe.
"I know what she did," said Dara. She looked at Vex.
Vex didn't hesitate. Same motion, same crack, same sudden absence of light.
Dara turned and said something quietly to her people. Leo didn't catch all of it, but he caught not a threat and stand down and something that sounded like this changes things.
Then she turned back.
"We have a mobile camp twelve kilometers north. Medical, food, a secure comm array." She paused. "And a lot of people who hate Helix Dynamics with the specific passion of the personally wronged." She looked at all three of them. "You coming?"
Leo glanced at Klem.
Klem glanced at Vex.
Vex looked at Dara with her silver predator eyes and said, with great seriousness: "What is food."
Dara blinked.
Then, for the first time, she laughed — a real one, surprised out of her.
"Get in the crawler," she said.
The crawler's interior was cramped and warm and smelled of machine oil, dried rations, and the particular human scent of people who lived close together for a long time. Hammocks strung between cargo racks. A small cooking unit bolted to the wall. Maps covered every flat surface, annotated in four different handwriting styles.
Klem sat beside Leo on a bench near the rear, her thigh against his, her hand resting open on her knee — an invitation he accepted without discussion, his fingers sliding between hers. She looked at their joined hands with the focused attention she gave to things she was still learning.
Vex sat across from them, watching the Nomads with undisguised curiosity. The Nomads watched her back. It was, Leo thought, the most mutual staring he had ever witnessed.
A girl of perhaps sixteen — too young to be here, which meant her story was bad — offered Vex a strip of dried protein.
Vex took it. Examined it. Smelled it. Then placed it carefully in her mouth with the expression of someone conducting a formal experiment.
She chewed.
Her circuits did something complicated.
"Salty," she announced. "And... not unpleasant."
The girl grinned.
"I'm Pell," she said.
"Vex," said Vex. Then, after a pause that suggested she was trying it out: "Just Vex."
Leo watched this and felt something in his chest that he didn't have a clean word for. Something adjacent to hope, maybe, which was an emotion he had deliberately avoided for several years on the grounds that it was operationally inconvenient.
Dara dropped onto the bench beside him.
"Tell me everything," she said quietly, under the crawler's engine noise. "How it happened. How long they've been... like this."
Leo told her. Not all of it — some of it wasn't hers — but enough. The cell. The data extraction gone wrong. The cascade of protocol failures that had turned two weapons into something that looked increasingly like people.
Dara listened without interrupting. When he finished, she was quiet for a while.
"We've had rumors," she said finally. "Mesher units in outlying sectors showing behavioral drift. Helix calls them malfunctions. Quietly decommissions them." She looked at Klem. "Never heard of one making it out."
"They're not malfunctions," said Leo.
"No," Dara agreed. "They're not." She lowered her voice further. "There's a man in the Grey Fringe. Goes by Cassius. He was lead neurosurgeon on the original Mesher development program before Helix disappeared him — he faked his death, been underground for four years. If anyone can tell you what's happening inside them, and whether it's permanent, it's him."
Leo felt Klem's hand tighten slightly on his.
She had heard. Of course she had heard — her audio range made human conversation in a closed vehicle essentially public.
"Permanent," she said quietly, not to Dara. To him. To herself.
"We'll find him," Leo said.
She turned her head and looked at him with those mirror eyes, and what was in them wasn't fear exactly — it was the look of someone standing at a door they never knew existed, hand on the handle, not yet sure if they want to know what's on the other side.
He held her gaze.
"Whatever's in there," he said, "it's yours. It always was."
Klem looked at him for a long moment. Then she leaned in and pressed her lips to the corner of his jaw, soft and slow, with none of the urgency of the bunker or the cell. Just presence. Just here.
Across the aisle, Vex had fallen asleep against the cargo wall — or something close enough to sleep that it counted — with Pell's head nodding beside her, the girl unconsciously having chosen the warmest and most solid thing available.
Vex's circuits glowed a steady, quiet gold.
Outside the crawler's narrow windows, the Ash Barrens scrolled past in shades of rust and shadow, and ahead, somewhere in the twelve kilometers of desert between them and the Nomad camp, the world was still vast and largely hostile and entirely unknown.
Leo thought: good.
Known things had never done much for him.