Part two of two. Following the challenges involved with building the Hinkley Point C in the remote Somerset countryside, the first new nuclear power station in Britain for a generation. This time, the team creates an extensive flood defence system to protect the site from a nuclear disaster like the one that befell the Fukushima Daiichi power plant in Japan. Elsewhere, cameras follow specialists as they work to uncover unexploded Second World War bombs that threaten the installation of the 4500-tonne cooling water intake heads