Two journalists are leading an investigation initiated by a certain Alain Delaunay, now 75 years old. The latter has amassed since the twenties a huge amount of data, photos and films of all kinds on the life of a man, Pierre Delaunay ... who is none other than his father, mysteriously disappeared in 1942. Phenomenon defying science: Pierre Delaunay does not change at all physically and seems to be eternally 41 years old. In 2006, Alain found himself in the wacky and uncomfortable position of being .... older than his father! With Alain's help, the journalists retrace the history of Pierre's wanderings. The scientists interviewed put forward convincing theses on cell renewal ... Pierre's file turns out to be known to General Intelligence and is classified top secret...