The Pajeú stream, in Fortaleza, victim of the city’s urbanization process, runs silently under the skyscrapers. For teacher Maristela (played by Fatima Muniz), recently arrived to the city, the stream’s invisibility touches the very core of her being: transfigured into an ultra-polluted monster, it materializes to her in a dream as if in a horror film. The attempt to circumvent oblivion (hers and the city’s) thus becomes an effort to recover fragments of this history, to create collective memories. Under a fictional regime pierced by the encounter with real and illustrious unknown spaces, the film retraces the river flow to restore the pieces of its people. (C. I)