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.

A group of down-on-their-luck bounty hunters hit the jackpot one night when they pick up an informant with a hundred thousand dollar bounty on his head. But their world is turned upside down when a mob boss offers them one million dollars in exchange for the informant. When they refuse, the mafia unleashes a trio of assassins on them who use all of their power to bring the bounty hunters down, and to get their man - dead or alive.