John von Neumann, one of the most incredible Hungarian-born scientists of all time, was named Man of the Century by the Financial Times in 1999. Among other scientific works, Neumann pioneered game theory and, along with Alan Turing and Claude Shannon, was one of the conceptual inventors of the stored-program digital computer. In late 1943 Neumann began to work on the Manhattan Project at the invitation of J. Robert Oppenheimer, and helped to design the first atomic bomb. This biography showcases the famous mathematician's work and legacy from the perspective of his daughter and colleagues. It is based on artefacts and documents from scientific history collections and on the personal memories of Marina von Neumann Whitman, Neumann's daughter. The film's production team has been filming all around the world, from Budapest to Los Alamos and Princeton, with the participation of several Hungarian and American scientists.