After the catastrophe known as the "Hammer of Eden" struck, 90% of the Earth's surface was flooded, killing over 6 billion people in the process. Fourteen years later, despite this tragedy, mankind perseveres. With the vast majority of land now submerged, groups of survivors soon band together amongst the world's scarcely available land masses and establish independent political states, slowly moving forward the machinations of society.

As these island politicians gather to establish a new United Nations, man's fangs are once again brought to bear upon his brothers. The U.S.S. Ulysses, one of the few remaining nuclear submarines in service has gone rogue, attacking the coalition and declaring war on the world.

In the ensuing pandemonium, Keel, a 14-year-old gambler and his secret love, Isla, a local girl who has just given birth to a new baby, end up on board this monstrous submarine. Under the command of the battle hardened Captain Gould, this desperate young family is benignly accepted into the crew. Meanwhile, the UN naval fleet begins its vengeful hunt, chasing the Ulysses with formidable fire power.