In the hot summer of 1940 the German troops are just outside Paris, and numerous Parisians are leaving the city in a complete panic. Luce Ader, the sensitive daughter of a factory owner, decides somewhat belatedly to escape as well, together with her arrogant fiancé Bruno. Since they have a luxury automobile, the elderly society lady Daine Lessing decides to join them, and brings along the sensitive homosexual diplomat with her. The four of them finally leave the city in the hopelessly overloaded luxury car, only to get stuck in the middle of a seemingly endless column of refugees along a dusty road outside Paris...

Bernadette Soubirous, just 14 years old, goes by the river near the Massabielle cave. It is there that, for the first time, a “lady dressed in white” appears to her. Accused of lying, Bernadette’s revelation initially provokes mistrust and tensions in her family, drawing the wrath of civil and ecclesiastical authorities. The rumor spreads. Pilgrims begin to converge. Lourdes goes down in History.