Southport has fallen, and the claws of the Myriad crawl ever closer to the vulnerable city of New Panama. They reproduce endlessly, consuming their local environment and turning it into new soldiers.

The Immortals expend tonne after tonne of ammunition fighting a perfectly evolved bioweapon that cares nothing for casualties. The days wear at them. Their systems begin to fail. And always, always, the Myriad advance.

Nicholas Caddy must fight to save New Panama...but the stakes are higher than he could ever imagine.

Part four and finale of The Immortals series set in the Universe of War, thirteen years before the events of Symphony of War: The Polema Campaign.