FDS Kusanagi escaped the slaughter of Katana Squadron broken, overcrowded, and hunted. Its jump drive is cooling. Its radiators are crippled. Its life support is choking under survivors it was never built to carry. Worse, Captain Brent Duren holds proof that friendly authentication has been compromised, the kind of proof that could save the fleet or mark Kusanagi as the next target.

To warn command, Kusanagi must transmit.

To survive, it must stay silent.

Behind enemy lines, silence becomes its own kind of enemy. Heat builds in the hull. Air turns political. Survivors fracture into factions. Marines nurse dying drones through blackout operations. And Rear Commodore Patrick Sturm, rescued from the wreckage of Katana, insists that a warship’s first duty is not to hide. He outranks Duren, but he does not command Kusanagi.

Not yet.

As hunter-killer forces sweep the dark for the destroyer that lived, Duren must choose when to spend the ship’s last margin. One transmission may save thousands. One mistake may reveal the only surviving witness to the ambush.

Kusanagi has a warning to send.

The enemy is waiting for it to speak.