Michi and Carlo are known to the world at large as two normal family guys. However, in their spare time they like to pick up young female hitchhikers and brutally beat and rape them. One also dresses in (very unconvincing) drag to help ensnare victims. Can Dr. Daniara Mauri, who's already had the pleasure of operating on one of the victims who was left for dead, and nosy journalist Giochi, who's in the middle of a romance with our heroine, put a stop to this twisted duo?

"Libidine" is quite peculiar erotic horror about a scientist, who performs some kind of experiment on his snake. His adolescent daughter Anna has an erotic relationship with the snake.