在这部深海攻击动作/惊悚片中,美国蒙大拿号是世界上最先进的俄亥俄级隐形核潜艇，正在冰岛海域演习。海军军官克里格因在军中遭受不公平待遇及深陷债务危机，利用救援船只之际控制了蒙大拿号核潜艇。他要求美国总统给付十亿美金赎金，否则就动用核打击。约翰·埃勒斯及詹姆斯·皮尔萨是舰上的军医官和电气兵。关键时刻在潜艇底层的医生和皮尔萨，用他们的勇气与智谋阻止了克里格的危险计划，避免了一场核危机的发生。
On his final voyage before being transferred to a desk job, Commander Krieg, a seasoned Naval officer aboard the nuclear submarine USS Montana and overlooked for promotion to captain is making a shocking bid for world peace. With the help of mercenaries,he takes over the sub, its nuclear weapons and experimental stealth technology in order to hold Washington D.C. and the world hostage.
