Based on

Movies like Abarten der körperlichen Liebe (1970)

The film is a collection of fictional (unconnected) episodes depicting and analysing various forms of sexuality that go beyond 'normal' heterosexual relations. The subjects of the four episodes are lesbianism, transvestitism, male homosexuality, and sadomasochism. Some stiff grey-haired academic provides a voice-over and also the analysis between the pieces.