Chapter 5: Core Hunger

The pounding on the barricaded glass had stopped sometime before dawn.

That should have made the building feel safer. Instead it made the whole urgent care clinic feel like a held breath that had gone on too long.

Gray light seeped through the front windows in weak, dirty stripes, touching overturned chairs, smeared handprints, and the darkening streaks of blood that had dried on the tile. Somebody in the waiting room had started snoring in thin, ragged bursts. Somebody else was whispering a prayer in Spanish near the reception desk. The smell of antiseptic had given up sometime in the night. Fear, sweat, old copper, and too many bodies had won.

Caleb stood alone in the triage hall and stared at the blue-lit rectangle only he could see.

SAFE ZONE STATUS
Anchor Integrity: 62%
Barrier Stability: 71%
Population Registered: 23
Law Slots Occupied: 1/3
Stored Zone Power: 19/100

It had been thirty-eight when he’d checked it before trying and failing to sleep.

Now it sat at nineteen, and while he watched, the number flickered.

18.8/100

He felt the drop more than saw it, a strange pressure in the base of his skull like an elevator shifting downward. The air in the hall seemed thinner. Somewhere near the front entrance, one of the sheets they’d hung for privacy fluttered though there was no breeze.

Caleb swore under his breath.

He tapped the edge of the screen, and new text spilled into being.

Zone Power Consumption Sources:
Life Support Field
Breach Deterrence Lattice
Boundary Marking
Law Enforcement Matrix
Emergency Restoration Reserve

Warning: Current ambient intake insufficient.
Recommended Fuel Sources: Class-compatible cores, converted essence, territorial nexus feeds.

“Class-compatible cores,” Caleb muttered. “Sure. Why not say blood of a saint while you’re at it?”

“Talking to the ghost in the machine?”

He looked up. Mara leaned against the wall at the far end of the hall with a crowbar over one shoulder and a half-empty bottle of water in the other hand. In the gray morning she looked harder than she had last night, the angles of her face sharpened by fatigue. Her black hair was tied back with a strip torn from a scrub top, and dried blood painted one sleeve to the elbow. Not all of it was hers. Her eyes were too alert for someone who’d slept maybe twenty minutes.

“How long have you been up?” Caleb asked.

“Didn’t really bother going down.” Mara took another sip. “You look like hell.”

“That makes us match.”

She pushed off the wall and crossed to him, boots whispering over tile sticky in places where nobody had cleaned properly. “You get anything useful?”

Caleb angled his gaze toward her, then hesitated. He still didn’t know what happened if he shared too much. The System liked private information. It liked asymmetry. That alone made him distrust every bright little window it offered.

“Useful enough,” he said. “The zone’s starving.”

Her expression flattened. “How bad?”

“Bad enough that this place stops being a safe zone sometime today if we don’t feed it.”

That landed. He watched her shoulders stiffen, not with panic but calculation.

“Feed it what?” she asked.

“Monster cores.”

“Of course it is.”

“Apparently ambient whatever isn’t enough. We need something the System can convert. Cores are at the top of the list.”

Mara let out a humorless breath. “So the walls don’t keep monsters out unless we go out and kill monsters for the privilege.”

“Looks that way.”

“That’s sick.”

Caleb thought of the voices at the barricade in the dark. The exact tone the man outside had used when he’d begged to be let in, just before the thing wearing his face had started pounding hard enough to crack the outer pane. The rule Caleb had written—No entry after sundown without authorization of the Authority—and the invisible force that had made everyone inside obey it even when their instincts screamed otherwise.

“Yeah,” Caleb said. “It is.”

They stood in silence for a beat while the building creaked around them. One of the older fluorescent fixtures in the exam rooms buzzed fitfully, fed by a reserve battery that should have died hours ago and hadn’t. A System courtesy, maybe. Or bait.

“How much do we need?” Mara asked.

Caleb checked the screen again. More detailed options had opened now that he’d focused on the warning. Numbers arranged themselves with bureaucratic indifference.

Estimated Conversion Values:
Lesser Core (Common): +3 to +7 Zone Power
Variant Core (Uncommon): +8 to +15 Zone Power
Elite Core (Rare): +20+ Zone Power

Critical Threshold: Below 10 Zone Power, passive barrier collapse probability increases rapidly.

“Enough,” Caleb said. “And then more.”

Mara barked a quiet laugh and scrubbed a hand over her mouth. “Okay. Good. Crystal clear. We doing this with the whole kindergarten, or are we trying not to get everybody killed before breakfast?”

“Small team.”

“I vote small team.”

“You would.”

“You say that like I’m wrong.”

He wasn’t. Twenty-three frightened civilians with improvised weapons would make noise, panic, and body count. The safe zone had given them a night to become a group. It hadn’t given them competence.

At the mouth of the hall, a voice said, “If you’re talking about going outside, I need to be in that conversation.”

Officer Luis Ortega stepped into view, button-down uniform shirt wrinkled, vest scuffed, jaw covered in dark morning stubble. He carried his service pistol low but ready, finger well off the trigger. Caleb liked him more for that than he expected. Discipline was becoming a rare resource.

“You were listening?” Mara asked.

“The walls in this place are tissue paper.” Ortega glanced at Caleb. “Also, people are waking up, and they know when leaders are using the low voices. It makes them assume the worst.”

“They’re probably right,” Caleb said.

“Usually are.”

Ortega came close enough to see Caleb’s expression. “What’s outside?”

“Fuel,” Caleb said. “And if we don’t get it, this place won’t hold.”

The officer’s face didn’t change, but his eyes did. “So this isn’t a stock-up run. It’s life support.”

“Yes.”

“Then I’m coming.”

Mara rolled one shoulder. “Great. A cop, a dispatcher, and me. We just need a middle manager and this apocalypse is officially an HR issue.”

That got the smallest crease at the corner of Ortega’s mouth.

“Take Ethan,” he said. “Kid’s fast, and he actually listens.”

“The pharmacy tech?” Caleb asked.

“The one with the Red Sox cap. He did inventory for this place. Knows where the med closets are, where the backup keys are, and he didn’t scream when the thing in the parking lot split open.”

“High bar,” Mara said.

“Current circumstances.”

Caleb considered. They needed speed. They needed someone who could carry. They needed people who wouldn’t freeze the second the street showed them something impossible.

“Four,” Caleb said. “No more.”

“People won’t like it,” Ortega said.

“People can hate me while the barrier stays up.”

The words came out colder than he intended. Mara looked at him for a second, measuring. He knew that look. Last night, before he made the call at the door, a few of them had still been seeing him as the tired guy with the calm voice and the weird System authority. That had changed when he let strangers die outside to keep the rest alive inside.

He felt the shape of that decision in the room now, like furniture everyone had to walk around.

“I’ll get the kid,” Ortega said.

“And wake Naomi,” Caleb said. “If we’re going out, I want someone here who can keep people from turning this place into a church council while we’re gone.”

“She’s already awake,” Mara said. “I saw her in exam room three changing Mr. Hensley’s bandages. Didn’t even look tired. Creepy, honestly.”

“She’s a nurse,” Ortega said. “They’re all built wrong.”

Mara snorted and headed toward the waiting room to gather gear. Ortega went the other direction.

Caleb stayed where he was for one more second and looked at the number draining from the zone.

18.2/100

If we come back light, people die. If we come back late, they might die before we get here.

Dispatch had taught him the arithmetic of catastrophe. The world ended, and somehow the math was still the same.

He shoved the screen away and went to tell the others.

The argument was uglier than he expected and shorter than it should have been.

When Caleb explained the problem, faces around the waiting room shifted through disbelief, fear, resentment, and a desperate kind of hope. Some people started talking over each other immediately. A man in an oil-stained Broncos hoodie demanded to know why the “magic wall” needed anything at all if it was really safe. A woman with a toddler on her hip asked why they couldn’t all leave together and find somewhere better. Old Mr. Hensley, pale on his cot with his leg splinted and wrapped, just stared at Caleb with the exhausted concentration of a man trying to decide whether honesty was crueler than lying.

Naomi settled it.

She stood beside the nurses’ station in borrowed scrubs, sleeves rolled to the elbow, her braids pulled back, and spoke in the same tone she’d probably used on panicking patients in trauma bays.

“Listen.”

Just that. Quiet, level, impossible not to hear.

The room obeyed.

“Some of you want certainty,” she said. “Nobody has any. What we have is a problem with one possible answer. Caleb, Mara, Officer Ortega, and Ethan are going to try it. The rest of us are going to prepare for them to bring back wounded, supplies, or bad news. If you need to be angry, save the energy and be useful instead.”

She turned to Caleb. “How long?”

“One hour if everything goes right,” he said.

“So two.”

“Maybe.”

“Fine.” Naomi nodded once, businesslike. “I want every container in this building filled with water in the next ten minutes. We sort bandages. We clear the lobby floor. We set a fallback room in the interior hall in case the front fails.” Her gaze moved over the room like a blade. “Move.”

People moved.

Caleb felt a pulse of gratitude so sharp it almost hurt. He was good at deciding who got resources. He was good at command when command meant choosing the least survivable option and saying it clearly. But what Naomi did—making people remember they had hands and tasks and reasons not to fall apart—that was a different kind of power.

“You make that look easy,” he said quietly when the others dispersed.

Naomi checked the knot of a makeshift sling on a teenage girl’s arm and didn’t look at him. “It’s not.”

“Still.”

That made her glance up. Her face was tired in the clean, brittle way of someone holding together by force of habit. “Bring back what the wall needs,” she said. “Then maybe tonight we can all pretend this is a plan.”

Ethan turned out to be taller than Caleb had realized, all elbows and nerves, probably twenty-two at most. The Red Sox cap sat low over his eyes, and his hands shook only when he wasn’t using them. He carried a hiking backpack someone had found in a car and a fire axe that looked too heavy for him.

“I used to do intramural fencing,” he blurted as they gathered near the rear service exit. “Not that that’s relevant. I just thought maybe blade-adjacent experience should be disclosed.”

Mara stared at him. “You are adorable.”

“I get that a lot when people think I’m about to die.”

“Great,” Ortega said. “He’s funny too. That means the universe kills him first.”

“Can we not?” Ethan asked.

Caleb almost smiled despite himself. Almost.

They checked what passed for equipment. Ortega had the pistol and a scavenged baton. Mara carried the crowbar and a kitchen knife duct-taped to her forearm. Ethan had the axe and backpack. Caleb took a tire iron and a canvas medical bag stripped down for carrying cores and anything else small and vital. It felt stupidly inadequate. Then again, everything about surviving now seemed to start as stupidity and get renamed courage later.

At the rear exit, Caleb paused and touched the crash bar.

The blue screen unfolded immediately.

Boundary Interaction: Authorized.
Opening a registered access point will temporarily reduce local deterrence by 4%.

“Good to know,” he said.

“What?” Mara asked.

“Nothing encouraging.”

He shoved the door open.

Morning hit them cold and metallic.

The alley behind the clinic was washed in pale light that made every surface look dead. A delivery van sat at an angle against the dumpster enclosure, windshield starred and brown along the dashboard where something had sprayed across the inside. Trash had blown into wet heaps against the chain-link fence. A cat lay in the gutter with its belly opened and a slick black vine of intestine dragging toward the storm drain.

Then the cat moved.

Ethan made a sound like he swallowed his own lungs. The thing on the pavement dragged itself upright in a jerking, puppet-like motion, hindquarters flattened, front paws splayed too wide. Its eyes were milk-white and pulsing faintly green underneath. When it hissed, Caleb saw a second row of teeth working sideways in its throat.

Mara stepped forward and crushed its skull with the crowbar before it could lunge.

The crack rang off the brick walls.

Something skittered on a rooftop three buildings over.

“We are officially outside,” Mara said.

The dead cat convulsed once, then stilled. A marble-sized shard of cloudy crystal rolled out through the blood matting its fur and clicked against the concrete.

Caleb stared.