Step inside the most complex heritage rejuvenation project ever to occur in Europe. Norwich Castle is being restored to its former glory - a unique and ambitious plan to return this 900-year-old building to its original Royal Palace design. Curators and craftspeople pore over every detail to ensure its historical accuracy. Will they run out of time, money and endurance before they can unveil one of Britain’s most iconic royal buildings? Filmed every step of the way over seven years, this is the story of a heritage makeover like no other.