Major Aaron “Reaper” Wiggins came home to Tennessee hoping to leave the war behind.

For a few quiet days, he wants only his wife, Sarah, his daughter, Emily, and the fading promise of a normal life. But before sunrise, a runaway freight train tears through the fog outside Dyersburg, carrying a weapon no one was supposed to know existed: Compound 66, a lethal chemical agent engineered to burn, paralyze, and erase everything it touches.

When armed operators arrive not to rescue survivors but to destroy the evidence, Reaper is forced back into the life his family begged him to leave. With his home in flames, his wife and daughter hunted, and an entire valley under quarantine, he calls on the only men he trusts—his old special operations team.

What begins as a desperate fight for survival becomes a race against a global conspiracy. Behind the poisoned rail line stands Colonel Li Wei, a disciplined architect of mass casualty warfare, and beyond him waits the Citadel: a hidden port facility built to move death across borders before anyone knows the war has begun.

Outgunned, watched by drones, hunted through chemical fog, and cut off from every digital advantage, Reaper and his team must go dark, go silent, and strike before Compound 66 reaches the sea.

But Li Wei’s first weapon was only the opening move.

And Reaper is about to learn that some wars do not end when the enemy falls.

They only reveal the next layer.