Lana (voice)
In a desert world where oxygen is running out, man is forced to live underground. Lana, resourceful young woman, takes care of her young brother Théo. But one day, he disobeys her.
Fleur de Miel (voice)
Petit Potam lives in the village of Barbotam on an island in the Potamazone river. The village's activities revolve around the river and Pa Potam plays a very important role there: driver of the boat-train, he distributes provisions, mail.