Echo Protocol

Chapter 1 - The Signal

The first time the signal came through, it was nothing more than static-faint, irregular pulses of white noise filtering through Jett's homemade receiver in his bedroom above his uncle's repair shop. He almost dismissed it. Almost. But something in the rhythm nagged at the back of his mind, like a code trying to remember itself.

Jett tapped the side of the receiver, adjusting the frequency dial. The old oscilloscope lit up with brief flickers of waveform. The signal returned: a low thrum punctuated by five sharp pulses, repeated every 9.7 seconds. Definitely not background noise. And definitely not natural.

He leaned back in his chair, staring at the screen. "You're not supposed to exist," he murmured.

The next day, under the cover of dusk, four teenagers met at the abandoned skatepark near Ridgepoint Hill. It had once been the town's weekend hotspot-until the sinkhole swallowed the north side. Now it was quiet, off-grid, and perfect for strange discoveries.

Aya arrived first, backpack slung across her shoulder, hair wrapped in a patterned scarf that fluttered slightly with the wind. She didn't speak until the others appeared. Lena strolled in next, wearing her ever-present leather jacket, combat boots crunching over broken concrete. Noah arrived just after, his hands shoved in his hoodie pockets, eyes scanning the sky.

Then came Jett, late as always, carrying a rugged, black metal case.

"Well?" Lena said, arms crossed. "What's the mystery? I ditched my patrol shift for this."

Jett set the case down and opened it. Inside was the receiver, humming with a soft, urgent pulse. The same five-beat rhythm echoed faintly from a small speaker.

"What is that?" Aya asked, crouching closer.

"I don't know," Jett said. "But it's not radio chatter. I triangulated the source. It's underground."

"Underground where?" Noah asked.

Jett pulled out a rolled map. It was old and water-stained, but the ink had survived. He spread it out on the crumbling picnic table.

"Here," he said, pointing to a red dot half a mile outside town-deep in the woods, past the floodplain. "This symbol appeared on the signal trace."

A circular glyph was sketched in the map margin-five concentric rings with a diagonal slash through them.

"Is that... a lab?" Aya asked.

Jett nodded. "Echo Cradle. It was shut down before we were born. My uncle says the government denied it even existed."

"Then how do you have a map to it?" Lena asked.

Jett smirked. "Found it buried in his attic. Along with this receiver."

They stared at the map in silence. Somewhere below their town, something long forgotten had woken up-and it wanted to be found.

"I say we go," Lena said finally.

"Obviously," Jett grinned.

Noah hesitated. "What if it's dangerous?"

Lena glanced at him. "We've handled danger before."

Noah looked at her for a long moment, then nodded.

Aya touched the glyph with her fingertip. "Echo Cradle," she whispered. "Why does that sound... familiar?"

They agreed to meet the next night. No phones. No GPS. No digital trail.

That night, Aya dreamed of metal corridors humming with electricity, a heartbeat echoing through walls that breathed. Her reflection in a polished steel surface looked back at her-older, eyes glowing faintly.

"You're almost home," a voice said in her ear.

She woke up gasping.