A visit to Venice for the 36th Art Biennale, filmed on 8mm on 23 September 1972. Father and son, Corrado and Stefano Calanchi, exchange cameras, filming each other in front of the works on display in the exhibition of Italian sculpture set up by Carlo Scarpa. "Spectacular" according to the press, this part of the Biennale affects the Calanchi as they wander between Arnaldo Pomodoro's imposing rotating sculpture and other striking works. On the other hand, the Calanchi do not film the part that will be remembered as the most innovative of the Biennale, the part dedicated to 'behaviour' (as opposed to 'work') and that is to performative action. Yet the Calanchi, like the artist Franco Vaccari, leave a trace of their passage, but not through the portrait photo to be hung on the wall, a revolutionary and participatory action requested by Vaccari from the visitors of this Biennale for his "real time exhibition", but rather these frames that come down to us from the treasure chest of their distant memories in a time capsule: an exhibition outside of time. Theirs too is after all a performative action, just look at their facial expressions and read the sign with the epithet about the Biennale that introduces the film: 'the last serious event'. 'Opera' or 'behaviour', art in 1972 is still a serious thing....