High tech takes over Big Brother for its 20th anniversary, as 16 all-new Houseguests face unexpected twists and upgraded power in a house inspired by Silicon Valley. A new tech-themed twist, the "BB App Store," will be unveiled when America will have a chance to get the Houseguests trending, resulting in power apps or punishments that could crash their game. Building on the themes of interactivity and collaboration, this season's house is inspired by the fun, colorful and creative interactive spaces on tech campuses around the globe, with a dynamic touch of innovation in every room. Julie Chen returns as host.