In Lisbon, Claudia offers guided tours in and out of the city. At night, she kills time with her sister in a modest apartment. In Lisbon, lonesome Martinho is fluent in Italian and guide tourists all around town. At night, he watches documentaries on the internet and reads about astronomy. In Lisbon, a band is jamming. They perform improvisational noise jazz. In Lisbon, a mysterious phenomenon fills the air. Claudia and Martinho’s lonely hearts will discreetly meet to the sound of music.