Classical symphonic music is everything for 17-year-old Zahia Ziouani and her twin sister, Fettouma. Living in underprivileged Parisian suburbs in 1995 with their Algerian background, they struggle arduously to approach their dreams becoming an orchestra conductor and a cellist. Driven by determination, passion, and courage, they create their own orchestra, Divertimento. It will be a game-changer.