A brilliant mathematician, John Nash, receives an offer to work with the secret services in tracking messages encrypted in the newspapers. His task absorbs him so completely that he does not even notice his deteriorating health.
Veteran submarine captain of Soviet Navy is sent to his last mission aboard an old boat that he used to serve on. During this mission a secret device will be tested, but that is not the only unusual thing about this patrol.
American pilots dishonorably discharged from US Navy after few years get the chance to to clear their names by taking part in a covert operations mission over Iran.
