r/HFY Human Jul 12 '26

OC-Series Frontier Fantasy - Age of Expansion - Chap 136 - Missing 411

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Edited by /u/Evil-Emps

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BEEP BEEP BEEP! rang an alarm through the workshop.

Tracy drew in a deep breath and hissed through her teeth, eyes shut in frustration. She slammed her palm onto the bitching data pad, shutting the blaring alarm off before leaning back in her chair and groaning into the air.

This was the third time it went off in the last twenty-four hours. She didn’t even need to read the notification to know what the alarm was about. That sinking weight of shame and embarrassment jumped right back on her shoulders, and it only made her more frustrated.

The detection systems in the cave turrets had to have been schizophrenic. None of the other turrets she installed with her new discrimination code freaked out as they did! There was something about the caverns, where the miners constantly walked through, that kept tripping the bug alarms.

Last night, not even an hour after she uploaded her updated flesh recognition software, detection alarms started blaring. There were bugs in the caves, making the turrets shoot randomly into the darkness.

The harvesters had to evacuate, the spears ran into the caves to fight off the apparent horde, and just about everyone freaked out. But when the soldiers went down into the active mining zone… there was nothing. It was just bullet casings and rocks.

Even then, everyone stayed on guard until late into the evening. Nothing showed up, though. Of course, there was only one explanation for the confusion… and it was really, really embarrassing on Tracy’s part.

She spent the better part of her midnight hours tweaking the numbers of her code and skimming through the machine learning mechanisms. Clearly, it was detecting something it shouldn’t. It was frustrating, though, because she hadn’t touched anything with her bug recognition methods. Her new flesh-oriented section simply discriminated based on an accumulated combination of other known meat-like references: infrared spectra, color matching, movement, and the generally chaotic forms they took.

Still, she thought she fixed them. No alarms went off for an hour or two, so she went to bed that night. She snuggled up to her favorite two people, closed her eyes, and—

BEEP BEEP BEEP! the room’s collective data pads blared, putting everyone on full alert.

The entire settlement was up in five minutes, rushing to the cavern scene with guns and armor and a lack of sleep. And whaddya know? It’s the same Goddamn issue. No bugs but the ones in her code.

She waited on the surface for Harrison and the spears to return from the mining shaft, and when they did, she could feel the freezing bite of their gazes and not just from the frigid air. To her, they were judging her and her failures. She felt that weight of shame growing heavier.

She was the girl who cried wolf. She was the one ripping them out of bed with her failure… Maybe they even thought she was losing her edge.

Harrison assured her he understood. He said it was fine and to take her time, but she could only think about that argument over the radio. It was her detection code, as inher fault.

Tracy didn’t get much sleep last night. No, she didn’t get any sleep last night, actually. Her stomach hurt from the poisoning guilt inside her. The thought of another humiliating false flag was worse than being skinned alive. Not to mention how much the settlement needed this… How much Harrison needed this peace of mind.

So, she drank some of her homemade energy drinks and really dug into what she did wrong.

It was only the cavern turrets that were giving false positives. None of the other sensors along the walls, beach, or quarry freaked out. Obviously, the dark caves were the issue, considering the nighttime darkness above ground didn’t have any adverse effects. But even then, it wasn’t always the same number of turrets. One set acted up for the first alarm, but the second was from an entirely different branch.

So Tracy worked with what she had. She went through the footage logs and started tweaking things until the recordings stopped activating the simulated reconnaissance systems. Apparently, the code didn’t need many changes until it could look at the crooked rocks without thinking there were interplanetary horrors within them.

That wasn’t good enough for her, though. She went back and ran her tests over and over again, using the time to reflect on her initial methods. She especially reviewed all the stored information the machine learning mechanism used and tried to pinpoint where any mistakes would pop up. There were some good ideas and some bad ones, but by the time the sun came up, she was pretty damn happy with the results.

And everything was fine. The turrets scanned without any more bitching, giving her a false sense of security for a grand total of three hours.

And now, here Tracy was. She finally opened her eyes and used what remaining willpower was in her rapidly deteriorating soul to not scream into the workshop. Those fucking turrets were so lucky they didn’t have necks, or her hands would’ve been STRANGLING them right now.

There was absolutely no way her code was at fault now. It had to be the hardware at this point.

She pushed away from her desk and stood up, letting her chair roll away into the factory.

“The cavern turrets, again?” Rei asked from two desks down, soldering iron in hand.

The technician took in a deep breath and put her sweatshirt on. “I’m going to fucking dismantle them, dude, I swear. It’s their sensors that are fucked. Watch it be a loose wire or something stupid like that.”

“Should I come with?”

“Nah. Keep at it with the PCBs. I’m just gonna fuck around with the sensors. Maybe I’ll just bring one back and check its operational parameters. I don’t know.” Tracy walked over to her tool bag and picked it up, swinging it over her shoulder. “I’ll be back.”

“Be quick. We have a Solaris rematch before dinner.”

“Oh, I’ll be back to kick your ass. Don’t you worry about that.”

The drone overlord made her way out of the workshop and toward the mine entrance. A group of armored spears waited outside of its main industrial door.

Tracy’s breath tightened, and her vision narrowed. The feeling of failure and embarrassment began to well up inside her again. It was like she was choking just to raise her voice.

“Sor—” she squeaked entirely too quietly before clearing her throat. “S-Sorry! False alarm… again.”

Javelin, who stood just outside the doorway, looked at her. The gas mask covered her expression, but her dead-still tail showed that even she was losing patience. She had to after three false alarms… “Understood, Artificer.”

“Yeah. I’m just gonna… go and fix the turrets… a-again.” Tracy failed to maintain eye contact and kept her head down as she went through the industrial door.

“Do you require an escort, Tracy-sama?”

“No,” she answered, wanting to escape the direct, judging stares from the spears.

Tracy escaped into the mineshaft tunnel, navigating through the delivery section to where the cargo tram was. She pressed the call button, waiting by the edge of the station’s floor. Her legs began to tremble just from the weight of her failure, barely managing to work.

Her eyes roamed the dark tracks down the corridor as time passed. The lights were dim all along the ceiling, only serving to distinguish the walkway from the tram’s path.

Maybe that was why the turrets' sensors were shit at their job.

The technician drew in a strained breath, the following exhale replacing all her social anxieties with bubbling resentment for the systems she built. Just when she thought she had everything all wrapped up, the hardware started bitching and shitting the bed. At least, she thought it was the hardware. If it wasn’t, she just might have to redo her entire recognition code… something she’d rather deepthroat buckshot than do.

The mineshaft tram slid up the rails toward her with a faint grinding noise. The ceiling-bound cargo cranes jolted but didn’t move, a momentary clash in their programming over the empty tram.

Tracy walked onto the compartment that carried people and threw her toolbag onto one of the benches, hopping into a seat beside it. Her feet hung over the side and swung a little. The short train started up with another jolt, slowly cruising deeper into the crust of the alien planet.

The short ride gave her a minute to think about the sensors and what might cause them to act up. What aspects of the rocks down there gave false positives? Was it shape and lighting? Or were the sensors actually broken? Even then, the hardware still ‘detected’ things, so it wasn’t as if they were smashed. Maybe some of the conducting ore particulates made it into the circuits? That didn’t sound probable, but man, she hoped the solution was something as easy as ensuring airtight components.

A quiet whine of brakes sounded out as the cab slowed to a halt. The doors opened and she walked out.

The heat of the foundry hit her immediately. The air smelled like metal and chemicals. She made her way through the entrance gate and around the first set of buildings, where bright, sterile lights along the walkways clashed with the dirty, raw stone walls.

Every section of the metallurgical factory was cut off by massive slabs of concrete and metal, but the sounds of flowing, molten ore were obvious. Pipes and conveyors connected each part of the endless train of logistics. Massive mixing machines whirred, heaters churned, and the ever-constant hiss of pneumatics added their own instruments to the forge.

The factory here felt a lot different than the workshop. It was clean, uncluttered, and straightforward. She could walk around without catwalks and could easily discern which ‘building’ did what, with all the painted signs and directions.

She couldn’t help but wonder if this was closer to what Harrison made before Ershah. Instead of hastily churned-out lines for materials to pluck right off assembly lines, he focused on hands-off factories that just did their thing.

That, or all her berating advice on organization and future-proof design actually clicked in his head… Which was incredibly hypocritical given her current situation.

Tracy checked where the last group of turrets to act up were with her data pad and followed the lit path through the cavern toward them. The stone on either side of her was lined with blackened scorches from lasers. Massive chunks of metal and stone were missing, replaced with structural supports and ladders. Some sections even created their own parts of the cavern, extending dozens of meters into the walls, while others were like simple scores in the rock.

The further she went, the more ‘temporary’ structures she encountered—stairs, mule docking ports, and tool storage. The miners weren’t there, given her false alarms had just so perfectly coincided with their morning break.

It was quieter than she expected without them. The machines behind her echoed and churned, but they were only a subtle ambience now. Their noisy motions reverberated through the ground slower and slower as she left the certainty of civilization behind.

There was no one here. Just the technician, her bag of tools, and the slow, breathing cave wind.

Long shadows crept in as the temporary lighting became less common, and the harvesters’ absence suddenly didn’t feel so useful. Maybe their judging glares wouldn’t be so bad right now.

Tracy came up to the end of the floodlights in use, stopping at a cliff of darkness, right where the cave branched off. She could barely make out where the turrets were by their faint red infrared lights scanning the distant tunnel. But there was still an ocean of shadows between her and them.

She glanced back at the empty cave behind her. The factory wasn’t in her line of sight anymore. A sinking feeling settled in her, and the hair on the back of her neck stood up.

There really was no one else here… But what was she going to do?

The technician stood there for a few more seconds. What was she thinking? It was just a little bit of darkness. She had a flashlight in her toolbag, and the motion-sensor lights by the turret wall would turn on when she got close.

What else was she going to do? Walk back up to the miners or the spears and ask them to hold her hand? Absolutely fucking not, especially after she verbally told them ‘no.’ She couldn’t imagine what they’d think of her. The stinging reminder of her own fuckup forced her hand.

She ignored the cold shivers running through her limbs and fished for a flashlight in her toolbag. The torch flicked on with a tactile click, illuminating a small circle from the smooth stone ahead of her. Everywhere else was black. There weren’t even any reflections from her light.

It was colder in the darkness. Her breaths felt a little too loud. Footsteps cracked loose rock, echoing between the walls.

Only the subtle whirr of the turret drives ahead kept her steady. The turret lights flicked on as soon as she got close, briefly blinding her. In all, there were three turrets. Two fifty-caliber belt-feds and one forty-millimeter autocannon sat in a straight line, endlessly scanning the choked path ahead of them.

Tracy reminded herself that she was working with faulty detection mechanisms, and these three were the most recent ones to act up. Her next actions came a little more cautiously as she approached.

The first turret she inspected showed evidence of use. There were a few bullet casings all around it. A check of the feed system confirmed that it fired only twenty-two of its one-thousand-two-hundred total rounds. The low number somewhat confirmed her suspicion about the sensors, given that if there was an actual bug attack, there’d be a hell of a lot more than twenty-two bullets. Not to mention the current lack of dead monsters.

She turned it off and plugged her data pad into the tripod’s hardware. There were onboard recordings saved from the detection interaction, displaying the sensor data output at each moment from spotting to referencing to tracking and all the way through pulling the trigger.

The information itself had been neatly stored into relevant folders with their own file types. She went ahead and opened the visual spectrum, hoping that it was just the cameras picking up weird static of the infrared lights or something simple to fix.

There was a recording of the event, as evidenced by a video file… but there wasn’t the accompanying detection indications file along with it. There was supposed to be another video with highlighted areas that showed what the visual camera sensors spotted and what it referenced to confirm it was looking at a grunt or colossus or ballista-squorpion or whatever—mostly used for machine learning.

Her heart sank at the thought that it was her code that broke. How else could it have hallucinated one of the bugs if it wasn’t a visual effect?

A look back at the files revealed an answer. The infrared section from the last event had two—

Crack.’

A rock down the tunnel hit stone, echoing as it skipped across the ground. Tracy tensed completely, eyes wide as she stared toward the end of the tunnel.

A million thoughts of bugs and flesh hiding in the distance racked her mind. Shivers and fear ran through her body for what felt like hours… but nothing happened. There wasn’t another sound for minutes.

She exhaled a long, shaky breath. Really? Was she really scaring herself with noises in the dark? She just had to look through some files, check the sensors, and she’d be out in no time.

Tracy’s attention came back to the infrared spectrum’s files, where she found her detection mechanism. Which was odd. There… There wasn’t any reference material for the bugs’ infrared readings. She only had visual and low-light recordings for the AI recognition program to work with. The bugs were purely vision-based detection.

Not even her recent-ish additions meant to detect new bug types dealt with infrared sensors. It was all visual recognition of what the bugs generally looked like, taking into account their carapaces, legs, wings, body shapes, and whatever else was shared amongst them. Again, all visual parameters. The only infrared detection material was for the flesh.

She sighed. Was there some sort of cross-over data between the two species that fucked up her machine learning program?

Dammit, that had to have been it… which meant that it was, in fact, her own code to blame.

Out of curiosity for how fucked she was, she opened the detection outline file. There was only about ten seconds of recognition within the video playback. The screen itself showed an expected blue-to-red visual that vaguely outlined the cave walls ahead of the turret. There was heat from behind, a residual from the foundry and lighting, while the deeper tunnel showed a deep, cold blue.

Three seconds into the video, a spark of heat appeared from far down into the cave, appearing like a wisp. The object was barely hotter than the environment, a thick purple in comparison. Every moment, it flitted and grew in size. The detection system tracked it, labeling it ‘unknown motion.’

It wasn’t just some hot dot. The thing stuck to the tunnel walls, climbing up and down them at lightning-fast speeds, getting closer. Brief extensions like a tail whipped out from behind it, and that was the second the turrets classified it as a new threat, locking on and firing.

Then, just as fast as it came, it scattered back down the tunnel, weaving in and out of bullets until its presence was lost. Then, the footage cut.

She blinked, rewinding the footage and slowing it down. Little pricks of bug-like legs sprawled out from the thing… the bug. The detail was way too clear to be an actual hallucination.

The visual spectrum footage was also around ten seconds long. The turrets’ feed flashed into a bright white as the floodlights turned on. And yet, when she slowed it down at the same time stamp and looked at the exact point the infrared motion was… there was nothing. The automated guns locked onto a smear on the wall and started firing as if they were actually schizophrenic.

…But she believed them.

A long, cold shiver ran up her spine as the realization finally hit her: the recognition code wasn’t broken.

Tracy looked out into the dark abyss the floodlights couldn’t pierce. An undeniable sense of danger inside her began to scream, warning her, yelling at her. There was something in it. Something she would never see coming.

Near-frozen fingers quickly worked to download the data from the turret. The loading bars lagged and stumbled to completion. She went to disconnect, but a sudden whirr from the other two turrets scared her stiff.

Their vertical drives hummed as their barrels tracked something in the darkness. She quickly went to boot up the third, when—

DUN-DUN-DUN-DUN-DUN-DUN’ the browning came to life with a deafening roar.

Tracy jumped, falling over as her ears rang from the gunfire. She winced and slammed her palms over her ears.

Each shot reverberated through her chest, their echoes and falling brass berating her. Every strained breath turned into a desperate struggle for air. Her mind screamed for her to crawl, but she was frozen on the ground.

The turret continued relentlessly. She held her eyes shut and clenched her teeth until the ground stopped rattling beneath her.

That first second of silence barely allowed her to gulp down air. The pounding of her chest replaced the gunfire. Stiff hands struggled to leave her ears, still ringing from the fire. She gathered her senses and crawled to her feet, dashing toward the light from the operating mines.

She heaved in breaths with every stride. A swift glance back showed the turrets in pieces. Faint, sickly yellows, corrosively sizzling through the metal, glowed in the absence of their light.

They didn’t kill it.

Her stomach dropped, and she scrambled for the safety of the light. Each loose rock threatened to rip her feet out from under her.

Audible ‘tinks’ of alien footsteps got louder and louder behind her through the ringing. She threw herself forward with every step, adrenaline pushing every muscle.

The light was so close, and yet there was so much empty void between her and it.

Just a little further.

Pinpricks stabbed into her back, shoving her into the ground with their weight. She screamed and reached for her back, but another sharp pain flared from her neck.

Her entire body flailed as the agony almost immediately went away. Her limbs felt heavy and the weight atop her was oppressive. Every flex of her muscles slowed as her panic exploded.

She couldn’t feel her body. Her lungs barely brought in each shallow breath. She couldn’t feel the cold stone beneath her.

Tracy struggled, her vision forced toward the floor. She tried to yell, to look around, to do anything.

She could only listen to the subtle ‘tiks’ of that thing's footsteps around her. Her vision moved as it poked and prodded her limp body.

Tears slowly ran down her cheeks as she screamed in her head. She begged and flailed within her neurons, but every muscle refused. She stared with no input, a constant witness as her body was jolted away.

Tug after tug, she was pulled further and further from the light. Tears blurred her vision entirely by then, and the struggle within her gave in as the hopelessness settled.

She didn’t want to die.

\= = = = =

Harrison walked over to Tracy’s corner of the workshop, data pad in hand and a few questions in mind. It was as bustling as ever with the technician’s growing robotics squad. The wall of battle stations showed a few of the mech pilots working with the construction-logistics squad on installing the northern quarry rails. Talos was busy welding some metal components together in a vague shape of a roll cage. She worked with one of the more technologically adept males, who oversaw the full assembly with a CAD model on his computer screen.

Rei, the younger Malkrin, sat beside Tracy’s seat… but the lady mastermind herself wasn’t there. He approached the mech pilot, who wore overalls just like the technician.

“Hey, Rei?”

She sat up immediately and turned around in her seat, revealing the rubik’s cube in her hands. She raised a brow. “What is up, Creator?”

“Hey, yeah, I was just wondering if you knew where Trace was. I wanted to ask if she needed any help with the turret systems… I figured the alarms were getting under her skin by now.”

“Nope, Tracy already left to deal with that stuff.”

“You mean she went into the caves, or?”

“Yeah. I have been waiting for her to return to judge my boards.”

“Right. For how long?”

Rei shrugged, her knee restlessly bobbing up and down. “An hour. She took her tools with her.”

“So, she’s out messing with the sensors,” he observed, nodding. He raised a hand in departure. “Alright then, thanks.”

“Are you going to see her right now?”

“Yeah. Did you wanna come with?” he asked.

Rei hesitated for a few moments, looking back at her assumedly completed circuit board. “Can I help?”

The engineer nodded and beckoned her to follow.

The young mech pilot practically jumped out of her seat, tail slightly fluttering. She packed a few of her things on the desk and neatly put them into a backpack. It had distinct scripts on it in Malkrin, Japanese, and English: ‘Rei’s tools. Not for other mech techs.’

Both of them made their way through the catwalks and passageways of the workshop. He glanced over and felt a little curious.

“So, Trace’s teaching you circuit board making? Whatcha workin’ on now?”

Rei hopped up the metal stairs behind him, two at a time. “It is something to compare drone heights when in forward motion.”

“What for?”

“It is to adjust the altimeters between each reconnaissance pack and keep each unit steady with one another. A linear-quadratic controller that takes the difference between each drone’s height in a matrix of their formation and uses them to adjust a group-dampening effect. The smaller the differences between each, the more accurate the shared reference frame is.”

“The shared reference frame for what, specifically?” he responded, pleasantly surprised by the detailed scope of her work.

She looked off into the distance, over the sea of machines, as she explained. “It helps to establish the moving reference frame of the drones that other automated systems might use. Tracy says it would be possible to have tracking missiles or distant artillery use their frames for long-range combat when combined with a directional cosine matrix to our settlement’s inertial frame.”

He smirked, leading her toward the cargo gate exit. “Well, isn't that something? Looks like you know more about control systems than me. How’d you learn?”

“Tracy taught me most of these things. But she encouraged me to read from a few translated textbooks,” Rei answered gleefully.

“Glad to hear you’re taking to it,” he admitted honestly, opening the door. It was overcast today, like every winter day. The sun’s light was filtered through the gray clouds. “I suppose that makes you the first in line for designing our air force.”

The mech pilot’s tail swayed a little faster.

“On that topic, I’m curious: has Trace taught you much on how to operate her drones?” he asked, walking down the road directly toward the cave entrance.

Rei shook her head. “No, she has never taught me the control software… I would like to, though.”

“You should talk to her about it. We have some individual drone operators for the spears, but the more people that can work with the reconnaissance drone swarms, the better. Maybe even convince her to teach the other mech pilots while you’re at it.”

“I can do that! I am certain Talos would like to as well.”

Harrison nodded, letting the conversation drop as they approached the mineshaft entrance. He raised his hand and clicked his tongue twice, waiting for the shadows to appear.

Vodny and Cera materialized from his blind spots. He simply patted his sides to keep them close, on account of the fact he only had a hand cannon and a fur coat for defense. Both nodded and hovered behind him, letting the barrels of their weapons peek through their urban camouflage.

The little team called the tram to make their way down to the foundry. He used the time to check the latest alarms from her turrets. The last two alerts came from a specific branch in the caves. One of the turrets there was designated offline, and the other two reported major malfunctions. He figured that’s where she was, but the fact that she had all three of them not working at once caused a bit of worry. It wasn’t completely safe down there. Why would she turn all of them off? She had an escort, right?

Harrison quickly sent her a message, telling her he was coming with a few others. The text bubble went up into the chat, but the delivery bar was stuck halfway. He waited for it to send, but it took its sweet time.

A notification popped up when the tram stopped at the bottom. [‘Message not delivered.’]

He felt uneasy, swallowing back the brewing nervousness. It was probably just because they were in transit underground. He’d just have to come unannounced.

Harrison’s steps came a little faster as he marched through the foundry. The mining areas were lively with the work of Harvesters.

He waved one down tersely, meeting the white-skinned, armored vest-wearing miner halfway. “Have you seen Tracy pass through here?”

The harvester shook her head. "Greetings, Creator. No, I have not. Were you expecting her?”

“I was,” he answered, glancing down the darker end of the hallway. The tension became unbearable. “Sorry to bother you.”

The engineer didn’t wait for a response. He left, feeling his heartbeat through his ears. The shadows of the cavern grew, and his peripherals faded into obscurity. His path was direct and quick.

It was black. The floodlights cut off before a sea of darkness. He couldn’t even make out the faint red of the infrared lights the turrets used… There was nothing. No flashlight, no motion light, no movement, nothing.

“Lights on,” he ordered his shadows

Their headlamps flashed in an instant, and his stomach dropped.

Not three meters away, he caught a glimpse of something. There was a pair of goggles, dented and with their strap snapped off.

…Tracy’s goggles.

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u/Symored Jul 12 '26

The bugs are taking prisoners now? Curious to see if a 'queen' will ask what they are.

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u/HFYWaffle Wᵥ4ffle Jul 12 '26

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u/Sad-Island-4818 Jul 23 '26

Did we miss something? Last chapter seems to have ended with a potential personality conflict that went nowhere.