Dr Morley (Victor Kilian) is convinced the world is heading towards atomic annihilation and thinks mankind needs a new home deep underground to keep safe. He forms a foundation and raises funds to build a machine that can explore deep underground. With a team of scientists and rich playboy financier Wright (Bruce Kellogg) the mission begins...
Of course, deep underground is a dangerous place (though also unfortunately a bit dreary). However, finally they discover a huge cavern underground with a mysterious life source and a sea. The rabbits which Joan (Marilyn Nash) has bought with her prove to be sterile in this new world though, which dooms Morley's hopes...
This isn't a bad film, it's just a bit dull. It has the usual perils and personality clashes and a reasonably cool drilling machine but lacks a spark somewhere, the low budget didn't help.
