Genesis 6:4 in the Bible’s Old Testament, reads:
The Nephilim were on the earth in those days, and also afterward, when the sons of God came in to the daughters of men, and they bore children to them. Those were the mighty men who were of old, men of renown.

The Sons of God, the Nephilim, have remained mysterious figures over five thousand years. Tall, fierce, and warlike, they are a footnote in history. Or are they? The President of the United States can’t be sure. A U.S. Trident submarine is missing – hijacked, along with her 24 nuclear-tipped missiles. The hijackers claim to be descendants of the Nephilim, with power, now, to dictate to the president. Their first order: don’t try to find your missing submarine. America’s hands are tied – officially. Unofficially, they hold one card: David St. James, a retired CIA agent with his own reasons for hunting down the Nephilim. Can one man, old and out of the game for years, solve the mystery of the Nephilim?