Using massive piloted robots to combat the alien threat, earth's survivors take the fight to the invading alien force lurking in the depths of the Pacific Ocean. Nearly defenseless in the face of the relentless enemy, the forces of mankind have no choice but to turn to two unlikely heroes who now stand as earth's final hope against the mounting apocalypse.
John Quincy Archibald is a father and husband whose son is diagnosed with an enlarged heart and then finds out he cannot receive a transplant because HMO insurance will not cover it. Therefore, he decides to take a hospital full of patients hostage until the hospital puts his son's name on the donor's list.
The world is full of zombies and the survivors have barricaded themselves inside a walled city to keep out the living dead. As the wealthy hide out in skyscrapers and chaos rules the streets, the rest of the survivors must find a way to stop the evolving zombies from breaking into the city.
