A helicopter spots a John Doe on the road ,lands and takes him away :they ask him where he is bound for;he wants to visit Paris,the catacombs ,the Mint,the Conciergerie ;then the man who takes him away on his plane,tells him he should become a man of tomorrow ,and leave a little the past behind. After a little time in the cellars of Saint-Germain-Des -Prés ,and in the Café De Flore ,it is only natural that he meets Jean-Paul Sartre .Afterward, our hero will meet the most influential personalities of the era: architect Le Corbusier,writer André Gide,Picasso, scientists such as physicists Frederic and Irène Joliot-Curie and biologist Jean Rostand who prophesies cloning.