Overview:

Lightning struck the hut of a Fulani shepherd near a village of settled fishermen, Ganghel, in Niger. A yenendi, a purification ceremony to obtain "water from the sky but not fire from the sky", is organized, with Sorko priests, ritual musicians and dancers, and the faithful from Niamey. The musicians call on Dongo, god of storms, and his brother Kirey, god of lightning. To the rhythm of the orchestra, a man goes into a trance, becoming Dongo's horse and at the same time the riding genie. Then a woman is possessed by Kirey. When the riding gods have mastered their horses, the gods visit the men. Dongo purifies the lightning-struck land and the oldest fisherman prepares the purification vessel, addressing Dongo.