A ravaged, remnant human population claims the Earth's dismal daylight hours, while bloodthirsty savages rule the night. One aging warrior struggles to take back the darkness. He fights bloodlust with bloodlust, but his most powerful weapon is a terrible one that might turn on him at any moment. He knows his one-sided war is a fragile thing, because he understands his victory will be decided as a desperate race against time. Yet history leaves him...