The race to control a newly discovered ancient alien technology threatens to tear civilization apart. Master Sergeant Cole Shaw and his team of mech operators are on the frontlines of the new war. But instead of mechs, they pilot bioengineered beasts called Sentinels. Only they can stop the Imperial Alliance from unleashing a devastating alien weapon with unparalleled power. Shaw’s team is sent to a colony planet where rebels clash with government forces, intergalactic empires vie for influence in the shadows, and monstrous feral creatures wreak havoc in forests as deadly as they are beautiful. Amid the chaos, Shaw must make tenuous alliances with untrustworthy forces and face impossible decisions with catastrophic consequences. If he doesn’t succeed, then it’s not just his team’s lives at stake—it’s all of mankind.