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The Space Between Doors

Brick-built corridor inside a military cargo ship where a minifigure soldier defends against a boarding force near a breached doorway.

THE CORRIDOR

The corridor was too narrow for retreat.

That was why Jace had chosen it.

White panels ran the length of the passage, scuffed by boots and cargo crates, scarred where something had once gone wrong and been repaired in a hurry. Overhead lights flickered—not enough to fail, just enough to remind him the ship was under strain.

Behind him: the cargo vault.

Ahead of him: the breach.

Jace adjusted his stance, planting his boots wide. The ship shuddered again as something heavy locked onto its hull. Magnetic clamps, maybe. Or cutting tools. Either way, the boarders were already closer than command wanted to admit.

He keyed his comm.

“Contact imminent,” he said. “I’ll hold here.”

A pause.

Then his brother’s voice, tight but steady. “Copy that. I’m still not seeing how they knew.”

Jace smiled despite himself. “You always did ask the wrong questions first.”

THE SHIP’S CORE

Eren didn’t answer.

He was already moving.

The ship’s internal sensors told a story that didn’t make sense unless you knew how to read between the lines. Boarding vectors too precise. Power fluctuations timed with internal door cycling. Someone had fed the attackers more than coordinates.

Someone on board.

Eren slid into the auxiliary control room and pulled up access logs, fingers moving faster as patterns emerged.

Unauthorized pings. Short-range bursts routed through maintenance relays. Clever. Hidden.

Not clever enough.

“Jace,” Eren said into the comm, “they didn’t guess. They were told.”

BUYING TIME

The first blast blew the far door inward.

Metal screamed. Smoke poured into the corridor. Jace raised his weapon and fired immediately—not to stop them, just to force hesitation. He needed seconds. Minutes if the universe was feeling generous.

Shapes moved in the smoke.

Too many.

He stepped forward instead of back.

Each step cost him ground he didn’t have to spare, but it kept the fight where he wanted it. The corridor funneled the attackers, stripped them of numbers, made every advance expensive.

“Find them,” Jace said calmly. “I’ll keep them busy.”

His shoulder burned where a shot grazed him. He ignored it.

Pain was negotiable.

Time wasn’t.

POV TWO — THE TRAITOR

Eren followed the data trail down into the maintenance ring, where the ship’s bones were exposed—wires like veins, conduits humming with restrained power.

He found the traitor crouched at a junction node, transmitter clutched in shaking hands.

Not a hardened saboteur.

A crewman.

“You didn’t mean for this,” Eren said quietly.

The man looked up, eyes wide. “They said they wouldn’t hurt anyone. Just take the cargo.”

Eren felt something cold settle in his chest.

“The cargo,” he repeated. “You knew it mattered.”

The man broke down then, words tumbling out. Debts. Threats. Fear.

Eren shut the transmitter off himself.

Too late to stop the boarding.

Just in time to save the ship.

POV ONE — THE LAST STAND

The corridor was filled with smoke now.

Jace fired until his weapon overheated, then switched to short bursts, then single shots. His armor was cracked. His breath came in sharp pulls.

The boarders kept coming.

He checked his ammo.

Enough for one more push.

“Eren,” he said, voice rough but calm. “How close are you?”

A pause.

Then: “I found them.”

Relief washed through him, so sudden it almost made him laugh.

“Good,” Jace said. “Then listen carefully.”

He stepped forward again, drawing fire, drawing attention.

“Get the ship clear. Burn hard. Don’t wait for me.”

“No,” Eren said instantly.

Jace smiled, unseen. “You always did wait too long.”

ESCAPE

Eren ran.

He sealed bulkheads as he passed, rerouting power, overriding safeties that screamed at him in red warnings. The engines spun up, straining against clamps still biting into the hull.

He reached the bridge and slammed controls forward.

The ship lurched.

Something tore free with a sound like the universe ripping fabric.

The stars shifted.

They were moving.

SILENCE

The corridor fell quiet.

Jace leaned against the wall, sliding down slowly as the ship’s vibrations changed. The engines’ deep hum told him everything he needed to know.

They’d made it.

He laughed once, breathless.

Worth it.

EPILOGUE — THE TRUTH

Hours later, with the ship secure and the cargo untouched, Eren stood alone in the corridor.

The repaired door gleamed where the breach had been.

He rested his forehead against the cool panel and closed his eyes.

The reports would say a defender fell holding the line.

They wouldn’t say his name.

They wouldn’t say he was a brother.

Eren whispered it anyway.

“Thank you.”

The ship sailed on, carrying its secret—and the space one man had bought with his life.

This is an original work of fiction created by Brick Crossing, inspired by the design themes of LEGO® set 75387.
LEGO® is a trademark of the LEGO Group, which does not sponsor, authorize, or endorse Brick Crossing or this content.

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New Steel, Old Ground

Brick-built mech piloted by a rookie minifigure stands on cracked ice and volcanic rock as veteran mechs watch from the outpost behind.

The new mech hummed instead of growled.

That was the first thing Arin noticed.

It stood taller than the older machines lining the outpost’s bay—sleeker armor, cleaner joints, control surfaces that adjusted themselves before he even thought to correct them. Diagnostic lights glowed calm and confident, cycling through readiness checks like a promise.

It made him feel taller, too.

Which was dangerous.

Outside the bay, the moon hadn’t changed. Ice still cracked open around slow-breathing vents of heat. Steam froze midair and fell back as brittle snow. The ground remembered every mistake that had ever been made on it.

Arin didn’t yet.

ARRIVAL OF REINFORCEMENTS

They’d arrived in force—three new mechs, fresh crews, updated systems meant to hold the line that outdated frames had somehow survived weeks earlier. Command called it reinforcement.

The veterans called it noise.

Arin felt their eyes on him as he climbed into the cockpit. He didn’t need to look to know who they were.

Lio, standing with his arms crossed, unreadable.
Mira, leaning against a crate, helmet under one arm, watching everything.
Kett, half-hidden behind a console, pretending not to stare.
Oren, already shaking his head at something the diagnostics insisted was “optimal.”

They didn’t look impressed.

They looked tired.

FIRST MISSION BRIEF

The assignment was simple.

A perimeter sweep. Sensor calibration. Show presence.

“Not a fight,” Lio said flatly. “You don’t chase. You don’t engage unless ordered. This ground eats confidence.”

Arin nodded quickly. “Understood.”

He meant it.

Mostly.

The mech sealed around him with a hiss, controls syncing instantly. The responsiveness was intoxicating. It moved like it wanted to be pushed.

He thought of the scarred veterans’ machines—patched armor, exposed welds, stabilizers that needed coaxing instead of commands.

Old steel.

He stepped out onto the ice.

CONTACT

The first warning came as a flicker—movement near the fissure field. Arin’s sensors painted it cleanly, automatically tagging threats before he’d even asked.

Two enemy signatures.

Outdated. Heavy.

We can handle that, his mech seemed to say.

Arin didn’t wait for confirmation.

He surged forward, boosters flaring, closing the distance faster than any of the older mechs ever could.

“Arin—hold position,” Mira snapped over comms.

He didn’t ignore her.

He just… finished the move first.

THE MISTAKE

The ground shifted.

Not dramatically. Not obviously.

Just enough.

Arin felt it a heartbeat too late as the ice under his left foot fractured into glassy plates. His mech compensated automatically—too aggressively—throwing his balance off instead of settling it.

He fired to regain control.

The shot missed its target.

It hit the ground.

The fissure answered.

Steam and heat burst upward, blinding sensors and overloading stabilization systems. Warnings screamed through the cockpit. The mech staggered, one knee slamming down hard enough to crack basalt beneath it.

Enemy fire clipped his shoulder.

Pain bloomed—not physical, but worse.

Embarrassment.

Fear.

Then a familiar voice cut through the chaos.

“Power down your left stabilizer,” Lio ordered. Calm. Absolute.
“Do not fight the ground,” Mira added. “Let it move.”

Arin swallowed and obeyed.

VETERANS MOVE

The older mechs entered the field like they belonged there.

Mira slid in fast and low, her machine dancing over the ice with practiced familiarity. Lio took the high ground, not firing, just being present. Kett and Oren worked in tandem—one disrupting enemy targeting, the other guiding Arin’s systems back into alignment.

The enemies withdrew.

Not because they were destroyed.

Because they weren’t welcome.

Arin’s mech stood again, systems stabilizing, new armor scorched and cracked in places it had promised wouldn’t fail.

The silence afterward was heavier than the fight.

AFTERMATH

Back in the bay, Arin climbed out slowly.

No one shouted.

That was worse.

Mira finally spoke. “Your machine’s impressive.”

Arin nodded. “It—”

“But you flew it like it was invincible,” she finished.

Lio met Arin’s eyes. “This ground doesn’t care how new your steel is.”

Arin felt heat rise to his face. “I thought—”

“I know,” Lio said. “That’s why you’re alive.”

Oren gestured toward the cracked armor plate. “We’ll fix it. But you should keep that mark.”

Arin frowned. “Why?”

“So you remember,” Oren said simply.

Later, alone in the bay, Arin ran a hand over the scar in the armor.

The mech hummed softly—still powerful, still capable.

But quieter now.

Outside, the moon steamed and cracked and waited.

Arin understood, finally.

New steel didn’t make you ready.

Listening did.

This is an original work of fiction created by Brick Crossing, inspired by the design themes of LEGO® set 75390.

LEGO® is a trademark of the LEGO Group, which does not sponsor, authorize, or endorse Brick Crossing or this content.