A young officer in Napoleon's army (Jack Nicholson) pursues Helene (Sandra Knight) to the castle of an elderly baron (Boris Karloff) who finds himself tortured by the ghost of his wife. Is Helene the ghost or the pawn of a witch intent on having the baron commit suicide?

Little shop of horrors: In a flower shop's basement a timid employee discovers a ferocious, talking, rapidly-growing plant, which forces him to lure victims to satisfy its taste for human flesh. Terror: A young officer in Napoleon's army is washed ashore on the Baltic Sea. He is rescued by a beautiful, mystifying woman, Helene, who leads him on an eerie trail to an old baron's castle. It seems that this baron is an impostor, the real one having been...