The two officers discuss the ongoing transfer of gold from Fort Knox to Pacifica, a project that began under Matthews' previous administration six months earlier and is now nearing completion.

Allen filmed the original concept for City Beneath The Sea as a science fiction movie set in the year 2068, but it was never shown publicly.

It remained unseen by the public until the DVD release of the Sci-Fi Channel's 1995 documentary The Fantasy Worlds of Irwin Allen, in which it was included as a special feature.

Their lead engineer Temple is scheming to put an end to an underwater drilling project, which is spearheaded by the U.S. government and run by Matthews' team.

The proposed cast consisted of Glenn Corbett, Lloyd Bochner, Lawrence Montaigne, Francine York, Cecile Ozorio and James Brolin.