Plot: Alberto Angela guides us on a fascinating journey into our brain: one hundred billion cells that determine the birth of our thoughts, and also of our passions, pain and joy, as well as naturally governing every movement of the body. We go to the Modena Polyclinic to follow the 'first steps' of a human brain, starting with those signals that infants exchange with their mothers and which are a real dialogue made up of facial expressions, like a smile that recalls another