Las calles could be regarded as a film about words, about describing and naming, about secrets and confessions, and about language as the matter of memory. In a dialogue between generations, young people are responsible for elaborating the question, and School is the place that tries to come up with a technique for it. In turn, the elderly answer through their stories, which are basically the story of the town. And like the word –which is always a fiction– builds a reality, the film sustains its tone on that intermediate area in which a fictional setting provides the conditions for the pure documentary genre to mark the pace and reach out to people.

Eva is just passing through Madrid. She spends her days there alone: she doesn't know anyone and isn’t particularly interested in getting to know new people. The city is therefore an unfamiliar place where she wanders aimlessly, her curiosity somewhat dampened. But one afternoon, at the Reina Sofía Museum, a man approaches her. His name is Dante and he is an Argentine historian researching labor struggles in his country and the career of Juan Bialet Massé.