Five people have stolen a priceless, legendary emerald from a religious temple. One of them is slain by an unknown killer.

After a historical excursus on the most common venereal diseases, doctors report on various cases of infection, each illustrated in the manner of amateurish reportage films.

A company's stockholders hold their meeting at a lonely mansion. A mad doctor conducting experiments in the mansion starts to strangle them one at a time with a nylon noose. The survivors must figure out a way to stop him.

Young widow Madame Yanne takes care of her pretty nieces Florentine and Juliet, who are currently living out their lesbian obsessions and are currently more engaged with each other than turning their heads around the lusty male world.