Shot in the span of a few hours at a party held in Milan in 1979, the film takes the form of a reflection on a fragment of a lost youth reality in search of new references. Young people who, emerging from years of intense political activism and profound social and cultural changes (the 70s), are about to enter a new decade (the 80s) lived under the banner of rampantism and hedonism. A document attentive to individual behavior, to original ideas, to communicative intentions that go beyond parched languages. Facce di festa is built by assembling material collected with different cinematographic techniques: hidden camera, behavioral interviews, descriptive images. In the film, there is an attempt to create a delicate but tenacious interference between the author's narration and the viewer's perception. The camera becomes a vehicle for forcing the cinematographic narration by seeking a new space in the presence of the spectator.