With Earth teetering on the brink of extinction, the human Federals and mutant-gene Raak-Zun are battling for control of its dwindling resources. Into this savage conflict step the mysterious Sentinel, exploiting superior technology that opens gateways to an alien and resource-rich planet.

With Earth teetering on the brink of extinction, the human Federals and mutant-gene Raak-Zun are battling for control of its dwindling resources. Into this savage conflict step the mysterious Sentinel, exploiting superior technology that opens gateways to an alien and resource-rich planet.