Horror Vacui (German: Horror Vacui - Die Angst vor der Leere) is a 1984 German avant-garde film directed by Rosa von Praunheim.

[2] Shot in a neo-expressionist style, the film is a satire on cults of any kind.

The plot follows Frankie and Hannes, a young gay couple living in Berlin.

Their happy life is disrupted when Frankie attends a lecture and quickly becomes involved in a sinister cult operating as a self-help group called "Optimal Optimism".

[3][1] "If you have a soft spot for fantastic and ironic films, you won't feel any inner emptiness [horror vacui] with Praunheim's wealth of fantasy."