London, September 3rd, 1939. The world is on the brink of war. In his final days, Sigmund Freud, a recent escapee with his daughter from Nazi regime, receives a visit from the formidable Oxford Don C S Lewis (Chronicles of Narnia). On this day, two of the greatest minds of the twentieth century intimately engage in a monumental session over the belief in the future of mankind and the existence of God.