Step into the role of Marcus Holloway, a brilliant young hacker living in the birthplace of the tech revolution, the Bay Area of San Francisco. Join the notorious hacker group Dedsec and execute the biggest hack in history: destroy ctOS 2.0, an invasive operating system used on a large scale by criminal masterminds for behavior manipulation and surveillance of citizens. Welcome to San Francisco: explore an incredible array of gameplay options in a vast and dynamic open world. This includes the colorful and vibrant city of San Francisco, the industrially influenced Oakland with its unpredictable suburbs, the pristine landscapes of Marin County, and the birthplace of the tech revolution, Silicon Valley.