AllMovie

In the series' opening episode, audiences are introduced to the super-submarine Seaview, built, owned and operated by the Nelson Institute of Marine Research headed by Vice Admiral Harriman Nelson (Richard Basehart). An assassination attempt on Nelson kills the commander of the Seaview on the eve of a vital mission -- a desperate run with scientist Fred Wilson (Eddie Albert) to the North Pole to detonate a hydrogen bomb to counteract a series of deadly tidal waves. The ship puts to sea with a new captain, Commander Lee Crane (David Hedison), whose long professional rivalry with Wilson only complicates the mission.