Mani is a son of peasants, who lives with his family near the Nile river. One day, trying to avoid his housework, he finds an obsidian scorpion. Hor-Hotep, a wise old man, leads him into a series of extraordinary adventures in one of the most enthralling stages in the history of the Upper and the Lower Egypt.This book was translated into French and published by Hachette with the name "La revanche d'Osiris."