The hero’s name is Sir Nicholas Winton. In order to save the lives of 669 Jewish Czechoslovakian children from the Nazi concentration camps, he organized a rescuing operation.
He managed to save them by bringing them to Great Britain. This happened in the years 1938-1939. Sadly, after the war his great act of bravery remained unknown. But later, in 1988, Winton’s wife found his notebook from 1939 where he kept a list of all of the rescued children’s names along with their photos.