A masked serial killer with psychosexual issues strangles female coeds with scarves before dismembering them. When a wealthy student identifies one of the scarves and thinks she has a lead on a suspect, she becomes the killer's next target, retreating to her family's remote cliffside villa with three of her girlfriends.
After returning to Catania after a long period of time, Giuseppe reunites with his old lover, Caterina. Her 15 year-old daughter, Graziella begins to seduce her mother's lover and he soon breaks down and begins an affair with her. As time passes Caterina begins having sneaking suspicions about Giuseppe's & Graziella's relationship.
A couple of wandering hippies meet a man by the name of Antonio who takes them to the home where he lives with his sister and brother-in-law. There they meet several strange characters: a gypsy woman, a prostitute and a disturbing drunk. The host tells them that he is a producer of wines and loves to entertain strange people. In fact he is a madman who has created a mechanism that can suck blood from human bodies.
