Firewall Heart

A hospital goes dark.

Not from power failure—but from something far more deliberate.

When a coordinated cyberattack locks down Ireland’s medical systems, lives hang by a thread—and someone is watching the countdown.

Helena Kincaid doesn’t panic.

She calculates.

Cold, precise, and trained to control chaos, Helena leads Sentinel—an elite protection unit built for the kind of threats governments don’t admit exist. But this time, the enemy isn’t just outside the system.

It’s inside it.

And it’s learning.

To stop it, Helena needs the one man who doesn’t follow rules.

Luca Navarro—known only as Null—is a ghost in the machine. A hacker with a past he won’t explain and a price on his head he didn’t choose. He doesn’t trust authority. He doesn’t trust institutions.

And he definitely doesn’t trust her.

But when the attacks escalate and the body count threatens to follow, Helena and Luca are forced into an uneasy alliance—one built on control, tension… and a dangerous kind of trust.

Because the deeper they go, the clearer the truth becomes:

This isn’t just about money.

It’s about power.

And someone is willing to burn the system—and everyone inside it—to get it.

Now the clock is ticking.

And if they fail—

the next heartbeat won’t come back.

He breaks code.
She controls chaos.
Together, they might survive each other.