Mariano Llinás, one of the most original and salient figures in recent cinema, returns after his epic La flor (The Flower, 2018) with a metafictional piece on family, memory and art history. The film explores the process of producing a biographical documentary around the figure of the illustrious architect Clorindo Testa (1923–2013), a friend of the film-maker’s father, the poet and art critic Julio Llinás. In between, akin to a frenetic detective story, suspense, politics, autobiography and, above all, humour convene in what is also an underlying reflection on what film is and what are, if they are actually of use, the narrations the director puts forward.