From 1957 —the year in which the Soviets put the Sputnik 1 satellite into orbit— to 1969 —when American astronaut Neil Armstrong walked on the surface of the moon—, the beginnings of the space conquest were depicted in popular culture: cinema, television, comics and literature of the time contain numerous references to an imagined future.

Georges Remi, known as Hergé, a complex and complicated artist, created Tintin, one of the most famous characters in the world. With exceptional access to the archives of Studios Hergé and Moulinsart, this documentary looks at Remi's life and the way he changed the art of comic.