The animation is divided into three sections. “Eternal conversation” (Dialog věčný) shows Arcimboldo-like heads gradually reducing each other to bland copies; “Passionate discourse” (Dialog vášnivý) shows a clay man and woman who dissolve into one another sexually, then quarrel and reduce themselves to a frenzied, boiling pulp; and “Exhaustive discussion” (Dialog vyčerpávající) consists of two elderly clay heads who extrude various objects on their tongues (toothbrush and toothpaste; shoe and shoelaces, etc.) and intertwine them in various combinations.
Terry Gilliam selected the film as one of the ten best animated films of all time.
The blog of Igor Boyar 