Basilio Martín Patino. La décima carta

In 1966, Basilio Martín Patino  sent nine letters to Berta. Almost fifty years later, Virginia García del Pino tries to write the tenth. A letter shared between her and Basilio Martín Patino, to explore her/their identity/ies, under the precept enunciated by the Patino own, "forget all about what we should be", what remains of that rebellious student writing Berta in 1966,  the beginning of a brilliant career as a filmmaker?