Two female producers are commissioned to create a short documentary for an exhibition dedicated to Rubén Santantonín, an elusive figure of the Argentine avant-garde who died very young, in the late 1960s. However, the client imposes one unexpected condition: the video must be made together with David Lamelas, Santantonín’s former collaborator and today an internationally recognized figure of conceptual art. At first, the plan seems clear and limited in scope: Lamelas, accompanied by a young film crew, gathers archival materials, documents the few surviving works, and interviews curators and major artists – such as Luis Felipe Noé and Marta Minujín – who, along with Santantonín and Lamelas, peopled the legendary scene at the Instituto Torcuato Di Tella. Lamelas gradually realizes that reconstructing the story of his friend also means confronting a series of gaps and contradictions.