A chance discovery leads American mining engineer Ben Harris and acquaintance Harold to discover a lost city under the sea while searching for their kidnapped friend Jill. Held captive in the underwater city by the tyrannical Captain (Vincent Price), and his crew of former smugglers, the three plot to escape...

Mad scientist Dr. Goldfoot plots another twisted scheme to take over the world by killing off the major military leaders of every country; to that end, he creates in his secret lab a bevy of bodacious girl bombs; full-length, life-size robots that explode when embraced.