In this campy, sci-fi comedy, deranged Dr. Goldfoot (Vincent Price) invents a machine that turns out an army of bikini-clad sirens programmed to seduce the world's wealthiest men into signing over their fortunes. But when secret agent Craig Gamble (Frankie Avalon) discovers the evil conspiracy, he knows he must destroy the gorgeous gold diggers before losing his heart -- and possibly his life -- to the hottest assassins on the planet.