"Mirror's Edge" is set in a quasi-futuristic city where life is comfortable and crime almost non-existent. The city's state of bliss is achieved by an oppressive regime that controls the media and its citizens. An underground crew of parkour couriers, called Runners, operate independently from the city's security and surveillance measures, delivering private goods and sensitive information across the city. At the same time, a new candidate, Robert Pope, is challenging the incumbent Mayor Callaghan on a platform of deregulation. The game follows the story of Faith Connors, a 24-year-old Runner who lost her mother when she was campaigning against the city shifting from its vibrant atmosphere to its current regime. Faith was trained by former Runner Mercury, who now provides her with intelligence and radio support. Faith's twin sister, Kate, is a disciplined police officer who has a lot of affection for Faith but is also committed to protecting the city.