Hiding in enemy waters during a secret mission, the U.S.S Amundsen, loaded with cruise missiles, is trapped under the polar icepack and faces Russian discovery. When inexplicable events occur during this fateful patrol, the crew question the skill and judgment of their Black skipper. Complicating matters, to survive the Captain and Executive Officer must unravel a series of subtle clues aboard their submarine, then decide what to do with a new set of threatening facts.