A man and a woman go out on a "big" third date. He's ashamed to admit he just lost his job, and she's afraid he'll run away if he finds out that she has a kid. Small lies lead to bigger ones and the night gets crazy very soon.

A marquis' mistress becomes pregnant with fraternal twins. He keeps the boy, but sends his bodyguard to dispose of the mother and the girl. Years later…

The lecturer invites his students to his home and then begins to educate them sexually, conducting various experiments.