The film recounts the incredible research conducted by François Cartault, a pediatrician and geneticist on the island of Réunion. Conducted like a police investigation over more than 20 years, his research, both medical and historical, takes us on a journey through the disease of moon children, deprived of sunlight, and on the trail of slavery in Africa. The film shows how genetics is also an astonishing trace of history.

Zoé Van der Waal
as Self : Dessinatrice

Célia Sy Djeelane
as Self : Enfant comédien

Camara-Goulan
as Self : Enfant comédien

Tella Kpomahou
as Self : Joiurnaliste