In Siberia, a military mission goes awry, threatening the survival of humanity. Inanna, the Sumerian goddess of desire and conflict, has been inadvertently released from her ancient confinement and has called forth a massive meteor to obliterate the Earth. Meanwhile, a Communist coup has toppled the government, leaving the global population indoctrinated. As humanity faces its darkest moment, the primordial being Gilgamesh, older than the universe itself, must choose whether to become the last hope for mankind. At the same time, Inanna has chosen David Murphy, a married archaeologist, to spend eternity with her. Both Gilgamesh and Inanna are soon identified by the new regime as potential weapons of mass destruction, signaling the onset of the apocalypse.