Chapter Text
Sabrina had imagined Pandora a hundred different ways before she ever stepped onto its soil.
Even after years of photographs, scans, field reports, and briefings... nothing had prepared her for the strange wonder of it. The world outside the reinforced glass of the transport shuttle glowed with impossible color, thick with mist and light and the layered silhouette of trees so large they looked less like vegetation and more like architecture. Every surface seemed alive. Every inch of the landscape carried the unnerving impression that it was aware she was watching.
Maybe she should have been afraid. Instead, she felt something closer to awe.
“Dr. Calloway?”
She turned at the sound of her name, clutching the tablet they had handed her in orbit. A man in a gray facility uniform stood at the ramp’s end, expression clipped and professional. Behind him, the landing platform buzzed with machinery, personnel, and the low mechanical thrum of a base that had far more underneath it than first met the eye.
“Welcome to Site Twelve,” he said. “I’m here to escort you to orientation.”
She nodded, adjusting the strap of her case over one shoulder. “Thank you.”
“Your assignment is in xenobotanical analysis. Greenhouse wing for medicinal classification and compound stability testing. You’ll report directly to Dr. Mercer. He’s our head scientist here on base.”
That, at least, was familiar ground. Sabrina let out a slow breath she had not realized she’d been holding. Plants she understood. Although as she took another look past the barrier of the compound, these plants would probably be a very different story, one she was really looking forward to figuring out. The atmosphere was filtered through the mask sealed over her mouth and nose, the platform beneath her boots was human-built alloy, and the landing bay had been designed to keep as much of the planet out as possible. But still, she felt it. Heat rising in humid waves from the forest beyond the barriers. The faint vibration of insects or wings or machinery she could not yet tell apart.
A vine as thick as her torso curled along the outer side of the landing barrier, glossy leaves unfurling in slow, deliberate movements toward the platform lights. Something small and many-legged darted beneath it, vanishing into the blue-green shadow. Beyond the compound fence the forest rose in layers, its trunks braided with glowing moss and hanging fronds that shifted in the wind like they were breathing.
Sabrina slowed without meaning to.
The escort glanced back. “Dr. Calloway?”
“Sorry,” she said quickly, though she was not sure why. “I just—”
“Don’t worry about it.” His mouth twitched, though not quite into a smile. “Everyone does that the first time.”
“Does it go away?”
This time, he did smile. Barely. “For some people.”
Sabrina looked back toward the forest, hoping it never went away for her.
The man led her across the platform toward a sealed entrance where two armed guards stood on either side of the door. They were not wearing the lighter utility gear of research staff. Their armor was dark, reinforced, and practical, rifles held low but ready across their chests. One of them scanned her badge before she had even fully reached the door.
The small green light blinked.
CALLOWAY, SABRINA E.
XENOBOTANICAL RESEARCH DIVISION
CLEARANCE: GREEN
The guard looked at the screen, then at her face, then back at the screen as if expecting the information to change.
Sabrina shifted her case higher on her shoulder.
“Problem?” her escort asked.
“No, sir.” The guard stepped aside. “Welcome to Site Twelve, Dr. Calloway.”
The inner doors opened with a hydraulic sigh. The air inside was different. Still filtered, but not the same sterile neutrality of the shuttle. There was something green about it, even indoors. A hint of soil and sap and something else she couldn’t place yet.
The door shut behind her and Sabrina had not realized how alive the world outside had felt until she was suddenly sealed away from it. For a moment, she missed the forest like a hand leaving hers.
“This way,” the escort said.
She followed him through a corridor where staff moved with practiced efficiency. Scientists in white and gray uniforms passed engineers in grease-marked utility sleeves. A pair of medics hurried by with a sealed supply crate between them. Somewhere beneath the floor, machinery hummed in a constant low rhythm, like the facility had its own artificial heartbeat.
Screens lined the walls at intervals, displaying environmental data, shift assignments, security bulletins, and weather warnings. Sabrina caught fragments as she passed.
PERIMETER STATUS: STABLE
ATMOSPHERIC FILTRATION: NOMINAL
SECTOR THREE ACCESS: RESTRICTED
PREDATOR ACTIVITY: EASTERN RIDGE
BIOCONTAINMENT REVIEW: 1800 HOURS
She slowed slightly at the last one.
Biocontainment.
It was not an unusual term on Pandora. Everything here was biocontainment to some degree. The atmosphere itself was lethal to humans without filtration. The flora was reactive. The fauna ranged from beautiful to catastrophic. Even pollen could become a research incident if someone was careless enough.
Still, the word snagged in her mind.
Her escort noticed her looking. “Standard alerts. You’ll get used to them.”
“Right,” Sabrina said. “Of course.”
They turned down another hall. The blue line beneath their feet split into three: one green, one yellow, one red. The green line curved left.
Her escort took it.
Sabrina looked toward the red line before she could stop herself. It continued straight ahead, disappearing through a heavy door at the end of the corridor. Two guards stood outside it. They did not move, but their eyes tracked her as she passed.
Above the door, black letters read:
BTA WING — AUTHORIZED PERSONNEL ONLY
She tried not to stare and failed. “What’s BTA?” she asked.
The escort did not pause. “Bioadaptive Trauma Annex.”
“Medical?”
“In part.” He continued walking.
She followed, though something in her chest had tightened by a fraction. “I didn’t realize Site Twelve had a trauma annex.”
“Pandora is dangerous.”
“Yes, but the packet made it sound like this was primarily a research station.”
“It is.”
“With a trauma annex.”
“People get hurt.”
There was nothing suspicious in the words themselves. They were true. People did get hurt. On Pandora, people probably got hurt often. Exposure incidents, equipment failures, animal attacks, plant toxins, falls, infections, atmospheric breaches. Any responsible facility would have emergency medical capacity.
Sabrina made herself look away.
The green line led them into a wider section of the facility, warmer and brighter than the previous corridors. The air smelled faintly different here: damp soil, nutrient solution, crushed leaves, and chemical stabilizers. Sabrina’s unease loosened.
The greenhouse wing had glass walls that opened along one side of the corridor, revealing a series of sealed growing chambers filled with Pandoran plant life in carefully controlled conditions. Sabrina stopped so abruptly that her escort made it three more steps before realizing she was no longer beside him.
Inside the nearest chamber, delicate spiraling fronds grew in a shallow pool of mineral-rich water, their translucent stems pulsing faintly with lavender light. Along the far wall, a cluster of broad, dark leaves curled inward and outward in response to the artificial breeze. Tiny filaments trailed from their edges like glowing hair.
Sabrina forgot the guards. Forgot the red line. Forgot the strange clipped answers.
“Oh,” she breathed.
A woman working inside the chamber glanced up from her console, saw Sabrina staring, and grinned through the glass.
The escort waited with the resigned patience of someone who had escorted many scientists into the greenhouse wing and watched every single one of them lose the thread of professional dignity.
“These are from a wetland system,” Sabrina said, moving closer to the glass. “The vascular structure is different than the catalog images. Look at the branching pattern. Is that a response to humidity or whatever electrical stimulus connects the plants?”
“Both,” a voice said behind her.
Sabrina turned.
A tall man stood at the corridor junction, hands folded loosely behind his back. He was older than she had expected, perhaps somewhere in his fifties, though his face had the preserved, well-rested look of someone with excellent medical access and very little tolerance for personal disorder. His hair was silver at the temples, dark elsewhere, trimmed close. He wore a white research coat over a gray uniform, the badge at his chest marked with a clearance band of deep red.
“Dr. Sabrina Calloway,” he said. “Welcome to Site Twelve.”
She straightened quickly. “Dr. Mercer?”
“In the flesh, yes.” His eyes flicked briefly over her, assessing without being rude. “How was the descent?”
“Beautiful,” she said before she could choose a more professional answer.
Mercer’s expression warmed by the smallest degree. “Good. I worry about scientists who arrive on Pandora and describe descent as anything less. If you can still see the beauty of it, you’ll last longer.”
She was not sure if that was a compliment or a warning.
He gestured toward the greenhouse. “You like the plants?”
“They’re incredible,” Sabrina said, feeling an embarrassing flush of enthusiasm. “I studied the lab-grown specimens back at the research institute, but this is entirely different. The way they interact with the environment, the way they move. Are you growing them from seed or cuttings? I didn’t see any in the catalog that exhibited this kind of bioelectric response in controlled settings.”
“Cuttings, primarily.” Dr. Mercer stepped forward to stand beside her, looking into the chamber. “We take small samples, encourage propagation, and monitor changes. Some species require more intervention than others. These, however, have adapted to our parameters quite well.”
Sabrina moved closer to the glass, her eyes tracing the subtle shifts in the plants’ movements. The spiral fronds rotated slightly, the lavender light in their stems pulsing in soft waves. “Are they communicating?” she asked, mostly to herself.
“Possible,” Mercer said. “The Na’vi believe all plant life on Pandora is connected through a neural network. They call it Eywa. We haven’t found a scientific basis for it yet, but...” He tilted his head toward the plants. “I’ve read your dissertation,” he continued as he began walking. “Your work on adaptive compound behavior in hostile-growth environments was... intriguing.”
Sabrina blinked, momentarily caught off guard as she hurried to keep pace with him. “You read it?”
“I read everything my team produces,” he replied. “You’ll be assigned to specimen cataloging and extraction analysis to start. Medicinal classification, biochemical behavior mapping, cross-environment stability, controlled synthesis when possible. Your official research objective is to identify plant-derived compounds with potential applications in trauma medicine, cellular repair, immune modulation, and neurological protection.”
He led her down the corridor, past more sealed chambers. Through the glass, she glimpsed glowing fungi, flowering vines with feather-like stamens, and something that looked like a cross between a succulent and a jellyfish.
“The goal here is not to harvest,” Mercer continued. “At least, not in the traditional sense. We’re interested in understanding how these species synthesize what they do, and whether any of those mechanisms can be replicated.”
Sabrina nodded, though a small part of her felt a flicker of disappointment. She had hoped for more direct interaction with the ecosystem, but this made sense. Site Twelve was a research outpost, not an expedition. The work was important, even if it was more controlled than she had imagined.
He stopped beside a door marked Compound Stability Lab 2A and pressed his thumb to the access panel.
The door slid open with a soft hiss.
Inside was the most beautiful laboratory Sabrina had ever seen.
She stepped in slowly, almost reverently.
The room was arranged around three central workstations, each with its own analysis suite, containment hood, and holographic modeling display. Along one wall, refrigeration units hummed beneath labeled sample drawers. Another wall held a bank of microscopes, spectrometers, and molecular printers. A large curved window overlooked the inner greenhouse chambers, giving the impression that the lab floated at the edge of a contained jungle.
On the central workstation sat a small welcome packet, a fresh lab coat, and a sealed case labeled with her name.
For one dizzy second, Sabrina felt twelve years old again, hunched over a secondhand microscope in her mother’s kitchen, staring at onion cells like they were windows into God.
Mercer let her have the moment before getting into the last part of her orientation. He gave her a brief overview of the lab systems, access protocols, sample logging procedures, contamination alarms, and emergency lockdown rules. Sabrina absorbed most of it automatically, though her attention snagged occasionally on details.
- Certain sample requests required cross-division approval.
- Some compounds would be routed through medical analysis before returning to botanical classification.
- All research output was mirrored to Mercer’s office and the central scientific archive.
- No independent field collection without written authorization.
- No unsupervised external excursions.
- No entry into red-sector corridors.
A knock sounded against the open lab door.
A young researcher stood there holding a stack of sealed files against her chest. She had dark hair twisted into a knot and the exhausted expression of someone who had survived three emergencies before breakfast. “Dr. Mercer? Sorry to interrupt. BTA flagged another stability variance on the K-9 sedative chain. They’re asking if—”
Mercer’s expression did not change.
The researcher stopped and her eyes flicked to Sabrina as she adjusted the files in her arms. “Sorry. I didn’t realize you were still orienting Dr. Calloway.”
Mercer turned only slightly. “Later, Dr. Vale.”
“Of course.” The researcher disappeared from the doorway so quickly it was almost like she had been pulled backward.
Sabrina looked at Mercer.
He smiled politely. “You’ll meet Dr. Vale properly later. Brilliant pharmacologist. Terrible timing.”
“K-9 sedative chain?” Sabrina asked before she could stop herself.
“Field veterinary work.”
“For dogs?”
His tone stayed pleasant. “We sometimes use familiar shorthand for unfamiliar things.”
“Right.” She nodded once. “Of course.” Of course.
Mercer studied her for one second too long. Then he picked up the lab coat and offered it to her. “Get settled. Read through the safety packet before touching anything with color, movement, or apparent opinions. Your quarters are in residential block C. Orientation dinner is at eighteen hundred. Tomorrow morning, we begin your actual work.”
Sabrina accepted the coat. “Thank you, Dr. Mercer.”
“I’m glad you’re here,” he said before leaving her in the lab with the door closing softly behind him.
For several minutes, Sabrina did not move.
Then the lab seemed to inhale around her, machines humming softly, monitors waiting, samples sealed and labeled in neat little rows. Her name was printed on everything. Her access badge opened the drawers. Her workstation recognized her thumbprint. Her research profile had already been loaded into the system.
She belonged here. This was what she had wanted. Wasn’t it?
Sabrina set her case down beside the central station and ran her fingers over the sealed sample box. A real lab. A real chance. Work that could matter. Compounds that might change medicine. Plant systems no human had fully understood. A world so alive it made Earth’s old forests seem like whispers by comparison.
She let out a slow breath and forced herself to smile.
“Stop being dramatic,” she muttered under her breath.
Her voice sounded very small in the expensive room.
Then the greenhouse lights shifted, dimming by a fraction to mimic the gradual lowering of Pandora’s sun. Beyond the inner glass, the plants responded. Filaments brightened. Leaves opened. A coil of lavender tendrils unfurled from the wetland spirals and drifted upward through the mist.
Sabrina’s unease softened beneath wonder and she stepped closer to the observation window, palm hovering just above the glass.
“Hello,” she whispered, feeling faintly ridiculous and unable to help herself.
In the chamber beyond, one of the spiral plants pulsed with light.
By the time she reached residential block C, her excitement had returned in full force. Her new quarters were compact but comfortable. She had a private bathroom, a work desk, a narrow bed, and a storage locker large enough for field gear she was not yet cleared to use. A single window looked out over the compound wall toward the edge of the forest. Sabrina set her case on the bed and crossed to the window immediately.
Outside, evening had begun to gather.
Pandora did not darken the way Earth did. It awakened into a different kind of brightness. The forest beyond the outer lights shimmered in threads and pools, blues and greens and violets emerging from bark, leaf, vine, and fungus. The compound floodlights tried to overpower it, but somehow they only made the human structures look harsher. Temporary. Embarrassingly angular.
Sabrina pressed one hand to the glass.
Somewhere deep in the facility, a muffled sound moved through the walls. A low, distant impact.
She stilled.
Another deeply rooted thud came from somewhere below her. Even more muffled than the first.
Sabrina turned away from the window.
The room remained perfectly ordinary around her.
Bed. Desk. Locker. Welcome packet. Emergency mask charging in its wall dock. A soft chime from the tablet reminding her of orientation dinner in twenty minutes.
She waited, but no third sound came.
After a while, she released a breath and laughed once under her breath, though there was no humor in it.
“Jet lag,” she told herself.
It was not jet lag, obviously. There were no jets involved. But space travel lag sounded worse, and interstellar displacement fatigue sounded like something a person with no friends would say at dinner.
So jet lag it was.
She changed into a clean uniform, washed her face, tied her hair back, and told herself again not to overreact.
At eighteen hundred, she followed the facility map to the dining hall.
The room was larger than she expected, filled with long tables and the layered noise of off-duty staff pretending not to still be at work. Engineers clustered with engineers. Security sat mostly together. The medical staff looked exhausted. The botanists were easiest to spot because half of them had leaves, stains, or nutrient gel somewhere on their sleeves.
Dr. Vale waved her over from a table near the far wall.
Sabrina hesitated only a second before joining her.
“Hi,” Vale said, pushing a tray aside to make room. “I’m Mara Vale. Pharmacology. Sorry about earlier.”
“Sabrina Calloway. Botany. And it’s fine.”
“No, it was stupid of me. First day, and I’m already making the base sound more ominous than it is.”
Sabrina smiled as she sat. “Should I be worried that you phrased it that way?”
Vale huffed a laugh, then glanced down at her tray. “Site Twelve takes getting used to.”
“So I’m gathering.”
“That’s diplomatic.”
“I’ve been here four hours. I still have optimism.”
“Dangerous condition.” Vale picked up her cup. “Mercer will cure you.”
Sabrina looked at her.
Vale seemed to realize what she had said and quickly added, “I mean, he’s brilliant. Truly. A little intense, but everyone here is intense. You have to be, to get assigned this far out.”
“Have you been here long?”
“Fourteen months.”
“Do you like it?”
Vale opened her mouth, closed it, opened it, and then smiled. “I like the work... and I like being one of the only scientists on Earth who gets to see and play with all of this. Makes me feel special.” She paused, then added, “I just sometimes wish I could go to the bathroom without passing four locked doors and a security sweep.”
Sabrina laughed, relieved to hear something so human.
Across the room, Dr. Mercer entered with a group of older researchers, all talking in low voices. He paused at the head of one table, said something to the room at large, and several people shifted seats without argument. When he sat, the others followed his lead.
Vale made a face. “Dinner seating. Never random.”
Sabrina glanced at her. “Is it—”
“Nepotism? Hierarchy? A little bit of both? Yes.” Vale sighed. “I sit with Mercer because I’m technically his assistant on the BTA compounds project. You’ll get used to it. Everything here is ranked. Access, resources, assignments, who gets the good coffee. It’s not terrible. Just... visible.”
Sabrina followed her gaze to the head table. Dr. Mercer was listening to something an older woman was saying, but his eyes flicked toward Sabrina for a fraction of a second. She looked away quickly, suddenly self-conscious.
“You should eat,” Vale said, nudging her tray. “The food here is one of the few things they got right. And don’t worry about sitting next to Mercer during meetings. I promise it gets less awkward.”
“Advice?” Vale said quietly.
Sabrina looked back at her.
“Don’t make Mercer repeat himself. Don’t go into red sectors. Don’t volunteer for night rotations unless someone you trust tells you why they need you. And don’t let anyone from medical requisition your compounds without logging where they’re going.”
Sabrina’s fingers tightened around her fork. “That last one sounds specific.”
“It is.”
“Why?”
Vale’s expression shuttered. “Some projects here are more sensitive than others. I’m sure you’ll find out soon enough.”
Sabrina thought about the red line. The trauma annex. The guards. The way Mercer had not quite answered her question about the sedative. A cold feeling crept into her stomach.
Vale leaned in. “Hey. Don’t overthink it. You’re here to do important work. Focus on that. Everything else will fall into place.”
Sabrina forced a smile. “Right.”
Vale patted her hand. “Good. Now eat. If you don’t, they’ll think you’re sick, and you’ll end up with a mandatory medical eval.”
Then, from behind Sabrina, Mercer’s voice asked, “Is your first day going well so far?”
Sabrina turned.
Mercer stood at the end of the table with a tray in one hand and the same calm, unreadable expression he had worn in the greenhouse wing. He looked between them, pleasant enough that the sudden tension could almost be mistaken for Sabrina’s imagination.
Almost.
“May I?” he asked.
There were at least six open seats around them.
Vale straightened. “Of course.”
Mercer sat across from Sabrina.
For a few moments, the conversation became ordinary. He asked about her room. Her first impressions. Whether the lab setup would suit her needs. He spoke with the polish of a man who knew exactly how to make attention feel like respect.
Sabrina answered politely
Vale ate almost nothing.
Sabrina was about to ask Mercer for more information on the BTA department when a tone sounded overhead. Almost like the facility itself had heard her. Not an alarm exactly. More like a notification.
Several people in the dining hall went still and a line of text appeared on the wall screen near the door.
BTA INTERNAL TRANSFER — CLEAR HALLWAY ACCESS: RED ROUTE
The message vanished after three seconds.
Conversation resumed, but thinner than before.
Sabrina looked toward Vale, who was staring down at her tray with an intensely focused look.
Mercer set his cup down. “Routine.”
Sabrina had not asked. That was the thing that made her look at him.
Mercer smiled. “Pandora,” he said again, almost gently, “is dangerous.”
Later, alone in her room, Sabrina replayed the day in pieces as she sat at the small desk with her tablet open, trying to read through the safety packet as instructed. The first sections were exactly what she expected. Atmospheric exposure. Mask failure. Emergency shelter protocols. Flora classification hazards. Venom response. Spore contamination. Perimeter breach protocols.
Then she reached the access map. Most of the facility was rendered in clean blue and gray. Research divisions. Residential blocks. Greenhouse wing. Medical center. Engineering. Dining. Communications.
The BTA wing appeared as a red block with no internal layout.
She zoomed in. Nothing. Just the label.
BIOADAPTIVE TRAUMA ANNEX — RESTRICTED
A reasonable thing, she told herself. A normal security precaution. A trauma annex did not need to be open to every botanist with a badge. Whatever “trauma annex” meant in a place like this.
Sabrina closed the map. Then opened it again. She stared at the red block until her eyes blurred.
Sabrina stood before she had decided to move. The room went silent around her. Her heart beat once, hard. Then again. She crossed to her door and opened it.
The corridor outside was empty. Bright. Clean. Harmless.
At the far end, a security camera shifted softly in its housing until its black lens pointed toward her.
Sabrina froze.
The camera watched her.
She became suddenly, acutely aware that she was standing barefoot in a hallway on an alien moon, four hours into a job she did not yet understand, listening for sounds she could not prove she had heard. Slowly, she stepped back into her room.
The door sealed shut.
For a long moment, she stood there with one hand still on the control panel. Then she laughed at herself again, quieter this time.
“Stop,” she whispered.
But she did not sleep well.
When she finally drifted off, she dreamed of the forest beyond the glass. Only in the dream, the trees were not glowing. They were watching.
And somewhere beneath their roots, something vast and wounded struck once against a cage.