The second signal came at sixteen forty-seven.
Mei heard it first.
Her tablet emitted a soft chirp — a notification tone she'd programmed specifically for anomalous radio signals, distinct from the facility's automated distress ping. She'd been monitoring the shortwave spectrum for hours, tracking the facility's automated broadcast and mapping the surrounding frequencies for any other electronic activity. The facility's distress signal was a steady, repeating pulse on 432.7 MHz — automated, mechanical, lifeless. This new signal was different.
"Jae-min." Mei's voice was sharp. "I'm picking up something else."
Jae-min was at her side in three strides. He'd been pacing the perimeter of their observation post, extending and retracting his spatial awareness in cycles to conserve energy. Now he crouched beside her wheelchair, his eyes on the tablet screen.
Mei tapped the display. A waveform appeared — jagged, irregular, clearly different from the facility's clean, repeating pulse. "This is on a different frequency. 461.2 MHz. It's shortwave, but the cadence is wrong for automated equipment. Look at the interval pattern."
Jae-min studied the waveform. The intervals between pulses were uneven — not random, but not mechanical either. There was a rhythm to them, a pattern that suggested intention rather than automation. Long pulse, short pulse, short pulse, long pulse, pause. Long pulse, short pulse, long pulse, pause.
"That's not a machine,". — he, said, said
"That's what I thought." Mei zoomed in on the waveform. "The signal strength is weak — it's being broadcast from a low-power source, probably something hand-built. And the frequency is unusual. Standard automated distress beacons use allocated emergency frequencies. This is using an unlicensed band. Whoever's broadcasting it didn't have access to standard equipment. They built their own."
"Can you triangulate the source?" — Jae-min, flat and assessing
"Already working on it." Mei's fingers moved across the tablet, running the triangulation algorithm she'd written during the walk from the mansion. "I need at least two more signal samples to get a bearing. Give me sixty seconds."
They waited. The cold pressed in. Jae-min's heating core cycled. The facility's lights flickered in the distance.
The signal pulsed again. Long, short, short, long, pause.
Mei captured it. Her algorithm ran. A bearing appeared on the display — a line extending north-northeast from their position, at an angle roughly thirty degrees east of the facility.
"Source is approximately eight hundred meters north of us," Mei reported. "That's—" She checked the map overlay. "Collapsed office building. On Ortigas Avenue, just past the intersection."
"Eight hundred meters." Jae-min's mind was already calculating. The area Mei indicated was outside the facility's perimeter patrol range — the guards didn't venture more than two hundred meters from the walls. It was also outside Jae-min's maximum spatial awareness range at current capacity. He could feel the facility clearly, but eight hundred meters north was at the edge of his perception — a fuzzy, indistinct zone where shapes registered but details didn't.
"Could be a trap,". — Rico, said, said
"Could be," Jae-min agreed. "But the signal pattern is wrong for a trap. A trap would be designed to lure us in — clean, continuous, impossible to ignore. This is intermittent, low-power, on an unlicensed frequency. If someone wanted to ambush us, they'd do a better job of broadcasting."
"Or that's what they want you to think." — Rico, voice quiet
"Uncle Rico." Jae-min stood. "We came here because a distress signal led us to a facility that's experimenting on university students. If another signal exists — if another person is out there, alone, in this cold, broadcasting on equipment they built themselves — we can't ignore it."
Rico exhaled through his nose. The breath crystallized. He knew Jae-min was right. He also knew that splitting the team in enemy territory was a tactical error of the first order.
"Who goes?" — Rico, eyes searching
"Me and Ji-yoo,". — Jae-min, said, said
"Absolutely not." Ji-yoo was already on her feet, Soulcleaver's gravitational resonance humming behind her sternum. "You're not going anywhere without me, Oppa. That's not a discussion. Besides, last time you went somewhere dangerous without me, you came back with a dimensional fracture in your chest and a mortality complex the size of Manila. I'm not doing that again." She jerked her chin at Rico. "Uncle Rico, back me up."
"I wasn't making it a discussion. I was stating the plan." — Jae-min, quiet certainty
"And I'm modifying the plan to include me, because the idea of you walking eight hundred meters into an unknown situation with no backup is idiotic, and I say that with the full authority of your twin sister who has been saving your ass since we were four years old." — Ji-yoo, gesturing dramatically despite the pain
Rico held up a hand. "Both of you, shut up. Jae-min, you're right — you and Ji-yoo are the fastest. But you're not going alone. I'm coming too."
"Uncle Rico—" — Jae-min, one word
"I'm fifty-three years old, my knees ache, and I can't feel my left ear anymore." Rico slung the M4 across his back. "I'm also the only person here with actual military training, and if you walk into a hostile situation without someone who knows how to clear a room, I will personally lecture you about operational security until you die of old age. We move as a three. Non-negotiable."
Jae-min looked at Ji-yoo. Ji-yoo looked at Jae-min. Neither of them argued.
"Thirty minutes,". — Jae-min, said, said
"Understood,". — Mei, said, said
"We won't be on our own,". — Ji-yoo, said, said
She smiled — the old Ji-yoo smile, sharp and confident and just a little bit reckless, the smile that had gotten them into more trouble than Jae-min could count and out of even more.
She's scared too. — Jae-min thought, reading the tension in her jaw beneath the smile, the way her shoulders were set two degrees too tight for someone who was actually relaxed
She just won't show it until after the mission. Like Yue. — Jae-min thought, understanding that each of them had their own way of carrying the weight — Ji-yoo's was a smile, Yue's was silence, and his was the pretense that he was holding it all together
"Move,". — Jae-min, said, said
They moved.
...
The journey north took twenty-two minutes.
The terrain was frozen urban — collapsed office buildings, frozen intersections, vehicles encased in ice. The snow canyons ran between every structure, ten-meter walls of compressed snow rising on both sides, their surfaces polished smooth by weeks of wind into something that resembled glass more than powder. The hard-packed frozen snow was dense as concrete beneath their boots, ten meters deep, swallowing everything below the rooftops — only the tops of taller buildings breaking the white plain like dark fingers clawing at the gray sky. They moved through the trenches single-file, Jae-min's spatial awareness extended, navigating around dormant frozen clusters and unstable ice formations. In some places the snow walls pressed close enough to touch, the only sky visible a narrow ribbon of gray between the building tops and the canyon rim. In others, the trenches opened into wider spaces where buildings had collapsed and filled the canyon with debris — frozen concrete slabs, rebar, shattered glass — forcing them to climb over obstacles that rose from the snow like the bones of dead giants. Ji-yoo stayed two meters behind and one meter to the right, her weight distribution balanced for instant combat deployment. Rico covered the rear, his M4 up, his eyes scanning the buildings on both sides of the street.
The cold at -74°C was punishing. Jae-min's thermal suit was losing ground — the heating core was cycling at maximum, but the outside temperature was dropping as the sun disappeared behind the perpetual cloud cover, and the differential was widening. His right hand was numb. His left foot was losing sensation. The respirator's heating element was working overtime, warming recycled air that tasted like plastic and copper.
"Signal's getting stronger,". — Jae-min, reported, reported
"What are we looking for?" — Rico, eyes searching
"An office building. Mei's triangulation put it on the east side of Ortigas Avenue, near the intersection." — Jae-min, laying out the facts without inflection
They rounded a corner and saw it.
The building had been a mid-rise office complex — eight stories, glass and steel, the kind of structure that had housed accounting firms and insurance agencies and small tech startups before the freeze. It was partially collapsed now, the top three floors having sheared away during the initial freeze and fallen into the street below, creating a mountain of frozen concrete and rebar that blocked the road. The lower five floors were intact but exposed, their windows shattered, their interiors visible through gaps in the curtain wall.
And on the fourth floor, visible through a broken window, Jae-min saw light.
Not much. A faint, warm glow — orange-yellow, flickering slightly, the color of a small flame or a heating element. In a city where warmth was nonexistent and light was gray, that tiny point of orange was as conspicuous as a bonfire.
"There,". — Jae-min, said, said
"I see it." Rico raised the M4 and peered through the scope. "Single heat source. No movement. Either they're stationary or they're not home."
"They're home," Ji-yoo said. Her head was tilted — the vibration-sense, reading the building. "I can feel something. Mechanical. A generator, small one, running in the same room as the light source. And something else — electronic. A broadcasting device. It's active."
"One person, one generator, one radio," Jae-min summarized. "They built a signal beacon and they've been living here."
"Alone?" — Rico, glancing over
"Alone."
They entered the building through a ground-floor lobby that had been torn open by the collapse. Frozen furniture, scattered papers, a reception desk buried under a layer of frost. Jae-min's spatial awareness mapped the interior — the first three floors were empty, no life signs, no movement. The fourth floor registered a single heartbeat. Slow. Steady. Alive.
The stairwell was partially intact — concrete steps with a frozen metal railing, the upper flights blocked by debris from the collapsed floors. They climbed to the fourth floor in silence, Jae-min's footsteps soft on the frost-covered concrete, Rico's boots crunching despite his best efforts, Ji-yoo moving like a ghost behind them.
The fourth floor was an open-plan office space. Cubicles, frozen computer monitors, a break room with a coffee machine encased in ice. The orange glow came from the far corner — a small enclosed space, probably a manager's office, where someone had hung thermal blankets over the broken windows and rigged a heating element from salvaged parts. Inside that warm space, Jae-min could feel the heartbeat. And the broadcast signal. And the unmistakable signature of a human mind at work.
He approached the door. Knocked twice.
The broadcast signal stopped.
Inside the room, there was a sound — the scrape of a chair against the floor, the click of a mechanical switch, the soft whine of a small generator being throttled down. Then silence.
"Who's there?" The voice was male. Rough. Low. The voice of a man who hadn't spoken to another person in a long time and had forgotten how to modulate his tone for social interaction. "If you're with the facility, I've rigged the corridor with shaped charges. Don't test me."
"We're not with the facility,". — Jae-min, said, said
Silence. Then the sound of footsteps. The thermal blanket was pulled aside from the inside, and a man stepped into the frozen office space.
He was lean. Sharp-featured. Mid-thirties, with the particular gauntness of someone who'd been surviving on minimal calories for weeks. His dark hair was unwashed, hanging in greasy strands across his forehead. His jaw was covered in several days of stubble. His eyes — dark, intelligent, intense — swept across the three intruders with the rapid assessment of an engineer evaluating a structural problem: threat levels, angles, escape routes, all calculated in the space of a heartbeat.
He was wearing a thermal suit — not as sophisticated as theirs, clearly homemade, layers of scavenged insulation held together with duct tape and wire. In his right hand, he held a length of pipe. Not a weapon, exactly. A tool. The kind of thing you use to pry open doors or lever heavy objects.
Behind him, visible through the gap in the thermal blanket, Jae-min caught a glimpse of the room: a single cot, a workbench covered in electronics, scavenged batteries, hand-soldered circuits, a small generator built from what looked like alternator parts and copper wire. And the broadcast device — a jury-rigged radio transmitter, assembled from salvaged components, with a hand-key switch and a coiled antenna wire that extended through the broken window to the exterior.
"You picked up my signal," the man said. His voice was still rough, but something in it had shifted — a flicker of hope, quickly suppressed. "From how far?"
"Four kilometers,". — Jae-min, replied, replied
The man's eyes changed. The hope vanished. What replaced it was something harder. Colder. More focused.
"The facility,". — he, said, said
"We're here for the students they're holding,". — Jae-min, said, said
The man stared at him. For a long moment, his face was completely unreadable — a blank mask of lean muscle and dark stubble and eyes that had seen too much. Then something cracked. Just slightly. A tremor in his jaw. A tightening around his eyes.
"Which students?" His voice was barely above a whisper. "Which ones have you seen?"
Jae-min hesitated. He didn't have names. He had faces — frozen images from camera footage, grainy and indistinct, blurred by low resolution and encrypted transmission interference. But the man in front of him clearly had names. He had faces too. Better ones. Clearer ones. Personal ones.
"We don't have a full list yet," Jae-min admitted. "We've seen — we know they're holding Mapua University students. Multiple individuals. We're here to get them out."
The man closed his eyes. His hand tightened on the pipe until his knuckles went white. When he opened his eyes again, they were wet. Not crying. Not yet. But close.
"My name,". — he, said, said
He stepped back. He sat down on the cot. He put his face in his hands.
And for the first time in what Jae-min suspected was a very long time, the man stopped holding himself together.