The first tree appeared at 03:17.

Kaia Renn was watching the horizon when it happened.

She had spent the previous two hours staring through the observation window of Aster-17, waiting for the impossible green line to disappear.

It didn’t.

Instead, it grew.

What had started as a thin streak across the red sand was now a wide band stretching toward the mountains.

Something was moving beneath the surface.

Not slowly anymore.

Fast.

The station shook again.

Kaia grabbed the edge of the window.

Behind her, Commander Elias Ward was speaking with the station’s central computer.

“How far has the vegetation spread?”

The computer answered immediately.

“Current estimated area: forty-three square kilometers.”

Elias stared at the display.

“Forty-three?”

“Correct.”

“How?”

“Unknown.”

Kaia turned away from the window.

“Because it’s not growing normally.”

Elias looked at her.

“What do you mean?”

“The plants aren’t coming from seeds.”

She pointed at the underground scan.

“They’re coming from below.”

The screen showed hundreds of roots spreading beneath the Martian surface.

But these weren’t ordinary roots.

They were enormous.

Some were more than ten meters wide.

They extended through the soil like a gigantic underground nervous system.

Kaia walked closer to the monitor.

“They’re connected.”

“To what?”

She zoomed in.

The roots converged beneath the station.

At the center was the structure they had discovered.

The enormous circular object.

Except it was no longer an object.

It had opened.

A circular entrance now existed beneath the station.

And inside it was darkness.

Elias stared at the image.

“How deep?”

Kaia checked.

“Unknown.”

“Send a drone.”

She shook her head.

“No.”

“Why?”

“Because something opened that door.”

Elias crossed his arms.

“And?”

“We don’t know what opened it.”

Before he could answer, the lights flickered.

A sound came from below.

Three slow knocks.

THUMP.

Everyone froze.

Another.

THUMP.

Then another.

THUMP.

The station’s youngest engineer, Noah Reed, whispered:

“Something is underneath us.”

Kaia looked toward the floor.

She could feel vibrations beneath her boots.

Elias reached for his weapon.

“Everyone to the elevator.”

The crew began moving.

Kaia remained beside the monitor.

“Kaia!”

She didn’t respond.

The underground scan had changed.

The circular structure was no longer empty.

Something was inside.

A shape.

Humanoid.

Standing perfectly still.

Kaia’s voice became quiet.

“There’s someone down there.”

Elias looked at the screen.

The figure moved.

Slowly.

It raised one arm.

Then pointed upward.

Directly toward them.

The lights went out.

The station became completely dark.

Then every emergency screen activated simultaneously.

A face appeared.

Not human.

It had two large black eyes.

Pale skin.

No hair.

And a small glowing symbol across its forehead.

The creature looked directly at Kaia.

Then it spoke.

Not through the speakers.

Inside her mind.

YOU CAME BACK.

Kaia stumbled backward.

Elias grabbed her arm.

“What happened?”

Kaia stared at the screen.

“It knows me.”

“How?”

“I don’t know.”

The creature continued.

YOU ALWAYS COME BACK.

Kaia felt a chill.

“I’ve never been here.”

The creature tilted its head.

NOT IN THIS LIFE.

The screen went black.

Noah looked at Elias.

“What does that mean?”

Nobody answered.

Then the station’s main door opened.

A cloud of red dust entered.

Beyond the doorway, something impossible stood in the desert.

A forest.

Not a large one.

Not yet.

But dozens of silver trees had already risen from the Martian soil.

Their branches glowed faintly blue.

Leaves floated around them like tiny stars.

Kaia stepped outside.

Elias followed.

“Stay close.”

She ignored him.

The air around the trees was different.

The station’s environmental sensors began changing.

Oxygen levels were increasing.

Humidity was increasing.

Temperature was rising.

Mars was becoming habitable.

Kaia approached the nearest tree.

Its bark was smooth and silver.

She placed her hand against it.

The tree reacted.

A pulse of blue light traveled through its trunk.

Then all the trees around them responded.

One by one.

Blue.

Blue.

Blue.

Until the entire forest was glowing.

Kaia pulled her hand away.

The ground opened.

A narrow staircase appeared beneath the tree.

It descended into darkness.

Elias stared at it.

“That wasn’t there before.”

Kaia looked down.

A symbol had appeared on the first step.

She recognized it.

It was the same symbol she had seen on the creature’s forehead.

Noah arrived behind them.

“Commander…”

Elias looked at him.

“What?”

“We have a problem.”

“What now?”

Noah pointed toward the sky.

A bright object was descending through the atmosphere.

Then another.

Then another.

Kaia looked upward.

Ships.

At least twenty.

They were not mining vessels.

Not research ships.

Not civilian transports.

They were military.

Elias’s face hardened.

“Earth.”

Kaia watched the ships descend.

“They found us.”

“No.”

Elias looked toward the underground staircase.

“They were already looking.”

One of the ships entered the atmosphere.

A message came through the station communications system.

ASTER-17, THIS IS EARTH COMMAND.

Elias answered.

“This is Commander Ward.”

The voice on the other end was cold.

“Your station has detected an unauthorized biological event.”

Elias looked at Kaia.

“What do you want?”

“Immediate evacuation.”

“Why?”

A pause.

Then:

“Because Mars is not yours.”

Elias’s expression changed.

“What does that mean?”

The transmission ended.

Kaia looked toward the staircase.

“Commander.”

Elias turned.

She pointed downward.

The creature was standing at the bottom.

Waiting.

Its eyes were glowing.

Then the voice entered Kaia’s mind again.

THEY ARE COMING FOR THE GARDEN.

Kaia whispered:

“What garden?”

The creature looked at her.

THE ONE THAT REMEMBERS YOU.

The staircase suddenly lit up.

Thousands of symbols appeared along the walls.

Kaia stepped downward.

Elias followed.

“Where are we going?”

“I don’t know.”

They continued descending.

Ten meters.

Twenty.

Fifty.

The walls changed.

The Martian rock disappeared.

In its place was a smooth black material.

It looked like glass.

But it was warm.

At one hundred meters below the surface, they found a door.

It was enormous.

At least thirty meters tall.

Kaia placed her hand against it.

The door opened.

Beyond it was a city.

Elias stopped breathing.

Buildings stretched into the darkness.

Towering structures made of silver and crystal.

Bridges floated between them.

Streams of glowing water flowed through channels.

And everywhere were plants.

Millions of them.

Trees.

Flowers.

Vines.

Entire forests.

A hidden world beneath Mars.

Noah stared in disbelief.

“This city…”

Kaia whispered:

“It’s alive.”

They entered.

The moment Kaia stepped onto the first bridge, the entire city awakened.

Lights appeared across the buildings.

Machines began moving.

Water started flowing.

And distant structures opened like flowers.

Then a voice filled the underground world.

WELCOME HOME.

Elias raised his weapon.

“Show yourself.”

A figure appeared on the opposite side of the city.

The same creature.

But now there were hundreds behind it.

They stood silently.

Watching.

Kaia stepped forward.

“Who are you?”

The creature answered.

We are the Gardener’s Children.

“What gardener?”

The creature looked toward the ceiling.

“Your planet.”

Kaia frowned.

“Mars?”

The creature shook its head.

“Not Mars.”

It pointed upward.

“Earth.”

Kaia felt her stomach tighten.

“Earth?”

The creature continued.

“Your ancestors did not discover life.”

Silence.

“They destroyed it.”

Elias lowered his weapon slightly.

“What are you talking about?”

The creature looked at Kaia.

“Your species came here long ago.”

Kaia shook her head.

“Humans have never been to Mars before 2049.”

The creature smiled.

“That is what your history says.”

A massive screen appeared behind it.

An image formed.

Earth.

Millions of years ago.

A beautiful green world.

Then enormous spacecraft appeared in its sky.

Kaia stared.

The ships looked human.

But they were impossibly advanced.

The image changed.

Humans walked across an alien landscape.

They planted something.

A seed.

The seed grew into a gigantic silver tree.

Kaia looked at the creature.

“That’s impossible.”

“No.”

The creature pointed at her.

“That is your beginning.”

Suddenly, a massive explosion shook the underground city.

The creatures turned toward the ceiling.

Elias looked upward.

The military ships had begun attacking.

The first missile struck the Martian surface.

The city shook.

Dust fell from the ceiling.

Kaia shouted:

“They’re going to destroy the station!”

The creature looked at her.

“No.”

Another explosion.

“They are trying to destroy the garden.”

Kaia suddenly understood.

The garden wasn’t simply a forest.

It was something much bigger.

Something that had existed before humanity’s recorded history.

Something connected to Earth.

And now Earth’s military wanted it.

A final explosion shook the city.

The creature turned toward Kaia.

“Your people have come to take the seed.”

“What seed?”

The creature pointed behind her.

Kaia turned.

At the center of the underground city stood an enormous tree.

Its trunk was wider than a building.

Its branches disappeared into darkness.

And beneath it was a single glowing seed.

The seed was pulsing.

Like a heartbeat.

The creature spoke softly.

That seed will decide which planet survives.

Kaia stared at it.

Above them, the sound of another explosion echoed through the ancient city.

And for the first time, she realized that the greatest danger on Mars was not what had awakened beneath the desert.

It was the humans who had come looking for it.

To be continued…