Mateo screamed.

Not because of pain—at least not at first—but because of the strange pressure that suddenly vanished from his eye, like a weight that had lived there for years and was finally gone.

Ricardo rushed forward.

—What have you done?!

Sofía didn’t answer immediately. She stood perfectly still, staring at the small thing writhing in her palm.

It was thin and dark, almost translucent, like a tiny thread soaked in oil. It twisted slowly, alive, reacting to the light.

One of the security guards gagged.

—What… is that?

Ricardo felt his stomach tighten.

For twelve years, the best doctors in the world had looked into his son’s eyes with microscopes, scanners, and machines worth millions. And now a barefoot girl from the street had just pulled a living creature out of them.

Mateo blinked repeatedly.

His breathing became uneven.

—Dad…

Ricardo grabbed his shoulders.

—Mateo, are you okay?

Mateo’s hands trembled.

Then he said something that made the entire garden fall silent.

—There’s… light.

Ricardo froze.

—What did you say?

Mateo lifted his face toward the sun, squinting.

—It hurts… but… I think I can see something.

Ricardo’s heart started pounding violently in his chest.

Sofía suddenly spoke in a quiet voice.

—There’s another one.

The words hit the air like ice.

—Another what? —Ricardo asked.

She pointed at Mateo’s other eye.

—Inside.

Ricardo felt panic surge through him.

—Don’t touch him again!

But Mateo, breathing hard, grabbed Sofía’s wrist.

—Wait.

His voice trembled.

—If she helped… let her try.

Ricardo hesitated. Every instinct screamed that this was madness. But Mateo’s face… it was different. For the first time in years, there was hope there.

Slowly, Sofía stepped closer again.

She lifted Mateo’s eyelid.

Everyone leaned forward in horror and fascination.

Her small fingernail slid carefully under the corner of the eye.

For a second… nothing happened.

Then she pulled.

Something thin slid out again, longer this time, twisting as it emerged. The creature wriggled violently, like a black thread suddenly exposed to sunlight.

The gardener dropped his rake with a clang.

Ricardo staggered backward.

—This… this can’t be real.

Sofía threw the thing onto the stone path and crushed it with her shoe.

A small wet sound echoed.

Mateo gasped.

Then suddenly he covered his face.

—The light… it’s too bright!

Ricardo rushed toward him.

—Mateo!

Mateo slowly lowered his hands.

His eyes were wide open.

Blinking.

Focusing.

And then… they locked onto Ricardo’s face.

For the first time in twelve years.

—Dad… —Mateo whispered, his voice breaking.

Ricardo stopped breathing.

—Mateo… can you… see me?

Tears rolled down Mateo’s cheeks.

—You look older than I imagined.

Ricardo collapsed to his knees.

Around them, the garden fell silent except for Mateo’s uneven breathing.

After several minutes, Ricardo finally turned toward Sofía.

The girl was washing her hands under the garden fountain, as if nothing extraordinary had happened.

Ricardo approached slowly.

—How did you know?

Sofía shrugged.

—Because I’ve seen those things before.

A chill crawled up Ricardo’s spine.

—Where?

The girl looked at him with those huge, unsettling eyes.

—In children who were taken.

Ricardo felt the blood drain from his face.

—Taken… by who?

Sofía hesitated.

Then she said quietly:

—People who put things inside them so they can watch through their eyes.

The words hung in the air like poison.

Ricardo’s mind raced.

Twelve years ago.

The accident.

Mateo had been kidnapped for six hours during a family vacation in Brazil. The police had found him unconscious on a roadside. The doctors said the blindness was probably trauma.

Ricardo suddenly felt sick.

—No…

He turned toward Mateo, who was still staring around the garden in wonder.

—No…

If what Sofía said was true…

Then those things in his son’s eyes weren’t just parasites.

They were… something placed there.

Watching.

Recording.

Living inside his child for twelve years.

Ricardo slowly looked back at Sofía.

His voice trembled.

—Who did this to my son?

The girl didn’t answer immediately.

She stared toward the mansion… toward the massive glass windows reflecting the afternoon sun.

Then she said something that made Ricardo’s heart stop.

—Someone who still works inside your house.

 

Ricardo felt as if the ground had disappeared beneath his feet.

—What do you mean… someone in my house? —he asked slowly.

Sofía didn’t look frightened. In fact, she seemed strangely calm for a girl who had just pulled living creatures out of a boy’s eyes.

She pointed toward the mansion again.

—They never work alone.

Ricardo’s chest tightened.

The mansion behind them was enormous. Dozens of people worked there: cooks, drivers, cleaners, security guards, assistants, technicians who maintained the systems of the smart home.

For years he had trusted them.

Suddenly that trust felt fragile.

Mateo was still standing near the piano bench, turning his head slowly, as if discovering the world for the first time.

—The trees… —he whispered.

He reached toward the branches above him.

—They’re green… aren’t they?

Ricardo’s throat closed.

—Yes, son… they are.

Mateo looked down at his own hands as if they were something miraculous.

—So this is what they look like…

Ricardo wanted to cry and laugh at the same time.

But Sofía’s words echoed in his mind like a warning.

Someone inside your house.

Ricardo turned sharply toward the security guards.

—Close the gates.

The two guards exchanged looks.

—Sir?

—Now.

Within seconds the metal gates at the end of the driveway slid shut with a heavy metallic sound.

No one would leave.

Ricardo turned back to Sofía.

—Explain everything you know.

The girl wiped her hands on her worn shirt.

—About two years ago, I met a boy on the street.

Ricardo listened carefully.

—He said men had taken him somewhere underground. He escaped before they finished whatever they were doing.

—Finished what?

—Putting the “watchers” inside him.

Ricardo felt a cold shiver.

—Watchers?

Sofía nodded.

—That’s what he called them.

She crouched down and pointed to the crushed black smear on the stone path where she had stepped on the creature.

—They’re not normal parasites. They are grown in labs. Very small when they enter the eye… then they attach behind it.

Ricardo’s breathing became shallow.

—Behind the eye?

—Yes. Near the optic nerve.

Ricardo remembered every doctor saying the same thing for twelve years.

“The optic nerve seems strangely inactive.”

But none of them had ever mentioned something living attached to it.

—Why didn’t any scan detect them? —Ricardo asked.

Sofía shrugged.

—Because they hide.

The word made Ricardo’s skin crawl.

—Hide?

—They flatten themselves. They look like tissue.

Ricardo stared at the black stain again.

If this was true… then someone had engineered something capable of living inside the human eye unnoticed for over a decade.

Suddenly Mateo spoke again.

—Dad?

Ricardo rushed to him.

—Yes, son?

Mateo pointed toward the mansion.

—Who is that man?

Ricardo turned.

Walking across the garden path was Dr. Álvarez, the family physician who had treated Mateo for years.

The man looked slightly confused by the tension in the garden.

—Señor Ricardo? The security team told me the gates were closing. Is everything alright?

Ricardo stared at him carefully.

Dr. Álvarez had been with the family for ten years.

He had supervised Mateo’s treatments.

He had reviewed every medical test.

He had always seemed compassionate.

But now… a terrible thought formed.

—Doctor —Ricardo said slowly —did you ever examine Mateo’s eyes physically? I mean… closely?

Álvarez frowned.

—Of course. Many times.

—Did you ever see anything unusual?

The doctor shook his head.

—Only the degeneration we discussed before.

Sofía suddenly stepped forward.

She stared directly at Álvarez.

The doctor noticed the dirty girl and raised an eyebrow.

—Who is this?

Ricardo didn’t answer.

Sofía spoke instead.

—You knew they were there.

Álvarez stiffened.

—Excuse me?

—The watchers.

For a split second… something changed in the doctor’s eyes.

A flicker.

Small.

But unmistakable.

Ricardo saw it.

—Doctor… —he said quietly.

Álvarez forced a laugh.

—This is absurd.

But his voice was too tense.

Mateo suddenly spoke.

—Dad… my head hurts.

Ricardo panicked.

—What’s wrong?

Mateo pressed his fingers against his temple.

—Something… moving.

The entire garden froze.

Sofía’s eyes widened.

—There’s another one.

Ricardo felt terror surge through him.

—Where?!

Sofía pointed at Mateo’s ear.

—Not in the eye.

Her voice dropped.

—Inside his head.

Dr. Álvarez stepped backward.

Too quickly.

Ricardo noticed.

—Doctor… don’t move.

Álvarez raised his hands.

—You’re being irrational.

But he was slowly edging toward the path leading back to the house.

Ricardo shouted.

—Stop him!

The security guards grabbed the doctor.

Álvarez struggled violently.

—You fools! You have no idea what you’re doing!

Ricardo walked toward him slowly.

—Oh, I think I’m beginning to understand.

Álvarez’s calm mask finally cracked.

—You don’t understand anything! The world will pay billions for that technology!

Ricardo’s heart pounded.

—Technology?

Álvarez laughed bitterly.

—Those “parasites” are living transmitters. Biological cameras.

The words hit Ricardo like a hammer.

—You used my son… as a camera?

Álvarez’s smile was chilling.

—Not just your son. Many children.

Ricardo’s hands trembled with rage.

—Why?

Álvarez leaned forward.

—Because the human eye sees everything. Governments, corporations… they all want access to that.

Mateo groaned again.

—Dad… it’s moving.

Sofía grabbed Ricardo’s arm.

—We have to remove it now.

—How?!

Sofía looked at Mateo carefully.

—Before it reaches deeper into the brain.

Ricardo felt pure terror.

—Can you do it?

Sofía hesitated.

—Maybe.

Álvarez suddenly started laughing.

A cold, terrifying laugh.

—Too late.

Ricardo turned toward him.

—What do you mean?

The doctor’s smile widened.

—Those things… when threatened… they send a signal.

Ricardo’s blood ran cold.

—To who?

Álvarez looked directly at him.

—To the people who created them.

And then… from somewhere beyond the closed gates of the mansion…

the low sound of approaching helicopters began to echo across the sky.