An insurance adjuster from Iowa is sent to California to investigate the connection between several deaths in California and a supposedly non-existent beach club.
Ex-football star Mike Gambril meets Terry McKay on a flight to Sydney, which is forced to land on a small atoll. They become romantic on board a ship sent to take them to a larger island. They agree to meet in New York three months later to see if the attraction is real. One shows up but the other doesn't. However, a chance meeting brings them together again.
A new technologically-superior Soviet nuclear sub, the Red October, is heading for the U.S. coast under the command of Captain Marko Ramius. The American government thinks Ramius is planning to attack. A lone CIA analyst has a different idea: he thinks Ramius is planning to defect, but he has only a few hours to find him and prove it - because the entire Russian naval and air commands are trying to find him, too. The hunt is on!
