Reconstructive surgeon Yamamoto Takumi (41) has restored injured body parts through unprecedented transfer surgeries, from severed hands and legs to lost breasts and lymphedema. Using supermicrosurgery, he's helped patients who were told they had no means of treatment. Doctors from around the world visit him to learn his extraordinary techniques. Once a shy boy who couldn't read the room, he's forged new paths for his field that astound professionals around the world. We explore behind the scenes of this doctor hailed as a young genius.