This is the story of a remarkable doctor who, in 1981, became one of the first scientists to recognize that we were on the verge of a new and terrible epidemic - HIV/AIDS - and then devoted his career to understanding and finding treatments for it. Dr. Fauci has been at the forefront of HIV/AIDS research ever since. Along the way, he also became the head of the National Institute of Allergy and Infectious Diseases, overseeing research into every frightening outbreak imaginable: Ebola, Plague, SARS, Zika, Anthrax, Malaria, Tuberculosis, Influenza, etc… He talks here about growing up as the grandson of Italian immigrants, and about how an education in the classics prepared him for medical school. He recalls how he became a target of the AIDS activist movement, but turned out to be one their greatest champions. And he describes his relationship with presidents and lawmakers and the news media, throughout decades of medical crises.