Five gigantic sinkholes have recently been discovered on a remote plateau on the other side of the world. A team of experts has made the trip to descend into the depths. Among them is professor Georges Lebrun, who has come with his wife.

Léo is the two-year old, son of the acting manager of a factory on the brink of closing. When employees discover the news, Bruno, a more radical Worker who is willing to fight for his job, abducts Léo.

The story takes us back to 1930 and centres around Antoine de Saint-Exupéry, an Airmail pilot in Argentina. When his best friend who happens to be Airmail’s best pilot Henri Guillaumet disappears in the Andes, Saint-Ex decides to set out in search of him, against all odds. This impossible quest forces him to push beyond his limits, turning his capacity to dream into his greatest strength...