Earth has fallen.
An ancient enemy known only from myth has returned to reclaim humanity.
The Nephilim arrive with overwhelming power, conquering entire cities and transforming their victims into loyal servants. Earth's defenses collapse. Billions are trapped beneath occupation. Humanity stands on the brink of extinction.
Mars becomes the last free world.
As governments, fleets, and resistance movements gather for a final stand, former soldier Chris Johnson must help unite a fractured humanity. Scientist Victoria Mukisa races to unlock the secrets of alien technology that may be humanity's only hope. Martian commander Marcus O'Malley prepares for a war no one was ready to fight. And veteran pilot Kael Vex discovers that survival may require becoming the very thing he spent years trying to leave behind.
With Earth occupied and Mars under siege, humanity's future depends on impossible alliances, revolutionary technology, and the courage to stand against an enemy older than civilization itself.
The war for Earth has begun.