The crew of a U.S. Navy submarine in World War II rescues survivors from a sunken ship, only to face a series of mysterious deaths and supernatural occurrences.The crew of a U.S. Navy submarine in World War II rescues survivors from a sunken ship, only to face a series of mysterious deaths and supernatural occurrences.The crew of a U.S. Navy submarine in World War II rescues survivors from a sunken ship, only to face a series of mysterious deaths and supernatural occurrences.