What really happens when 30 million volts of electricity charges through your body and you survive being struck by lightning? Now, meet survivors who live to tell their tale of being hit by a force that is faster than a speeding bullet and five times hotter than the sun as National Geographic unravels the science behind one of nature's most mysterious phenomena. With revolutionary brain imaging technology and 3-D CGI, travel inside the human body along the path of a lightning bolt.