Brazzi plays mad Dr. Frankenstein, Dunn is an evil dwarf and Lugosi (no relation to Bela) is a Neanderthal man. Add a monster named Hulk, and some nude women for sexploitation value. When a Neanderthal man is lynched by villagers, Count Frankenstein uses his years of research to bring the monster back to life. The process is a tricky one, however, as the count must avoid detection by the authorities, the furious locals and his own daughter (who's preparing for her wedding).