Well respected Pompeiian Glaucus performs an act of kindness by buying Nidia, a blind slave being mistreated by her owner. Nidia falls in love with her new master, but he only has eyes for Jone. Jone in turn is lusted after by Arbace, an Egyptian high priest of Isis. When Nidia beseeches Isis for help in capturing Glaucus' heart, Arbace gives her a "love" potion, which really w...