He's behind enemy lines. But those lines are shifting beneath his feet.

In the jungles of Makaum, the Terran military is locked in a critical standoff over the planet's resources with the hostile Phrenorians, even as both species maintain uneasy relations with the locals. Tensions could ignite at a moment's notice. And Master Sergeant Frank Sage has just stumbled upon the spark plug.

Alongside trusted Makaum scouts, Sage is running recon on what is possibly an unsanctioned Phrenorian military base.Deep in the savage wilderness, Sage recognizes the renowned Phrenorian warrior arriving on-site: Zhoh GhiCemid. As Sage knows firsthand, Zhoh's presence could mean trouble.

Meanwhile, a mysterious faction of Makaum insurgents breaks the fragile peace with a reckless attack on the Terran base. Before the situation devolves into chaos, Sage must learn to think like his adversaries--devious friends and deadly foes alike.