One rainy night, Alex’s laptop froze.
A red warning flashed: SYSTEM BREACH – UNKNOWN USER.
Then came another line: “We know who you are.”
His hands shook. Who could do this?
For the first time, Alex felt truly unsafe.

Words appeared on the screen:
“Meet us at midnight. Tower Bridge. Come alone.”
Alex thought of his missing father. Could this be connected?
His heart pounded as he packed his backpack.
By midnight, he was racing through the rain.

As Alex biked, his father’s words echoed:
“Trust your mind—and your heart.”
Was his father part of something bigger?
The thought gave him both courage and fear.
Through the mist, Tower Bridge rose ahead.

Fog curled around the bridge.
A black car stopped, and a woman stepped out.
She handed Alex a pen-like gadget.
“This was your father’s. Don’t lose it.”
Headlights appeared—danger was close.

Alex clicked the gadget.
A glowing map floated above his hand.
It shifted, showing tunnels beneath the city.
“This is real,” he whispered.
Somewhere, enemies were already hunting him.

At school, Alex noticed two men in suits.
They moved too perfectly to be normal.
When he ran, they followed.
He ducked into a café, then slipped out the back.
The chase had begun.

Alex sprinted through alleys, footsteps close behind.
He launched his mini-drone; it sparked at the men.
Cars screeched as he dashed across the street.
At last, he lost them in the crowd.
But he knew they’d return.

The map led him underground.
Cold tunnels stretched endlessly, water dripping.
At the end stood a giant steel door.
Symbols glowed as he pressed the device.
With a hiss, the vault opened.