This is the story of Joseph Rotblat, the only nuclear scientist to leave the Manhattan Project, the U.S. government’s secret program to build the first atomic bomb. His was a decision based on moral grounds. The film retraces the history of nuclear weapons, from the first test in New Mexico, to Hiroshima, where we see survivors of the first atomic attack. Branded a traitor and spy, Rotblat went from designing atomic bombs to researching the medical uses of radiation. Together with Bertrand Russell he helped create the modern peace movement, and eventually won the Nobel Peace Prize. Featuring interviews with …