在劫持了一艘苏联核潜艇后,恐怖组织的萨吉德·汗将军起航前往加利福尼亚海岸,决定用大量核导弹摧毁洛杉矶。Having seized a Soviet nuclear submarine, the terrorist group's general Sajid Khan sail to the coasts of California decided to raze Los Angeles with a rain of nuclear missiles. American intelligence services are, however, on alert and the Admiralty Majesty instructs the submarine to intercept the enemy and prevent the threat before it happens the irreparable. The mission is entrusted to the Captain William Arlington, who, though fallen foul of a court martial incident spent at sea, has the necessary qualities of courage and determination to handle such situations.