Abdul, Bilama, Moudio and Nguiamba, four Cameroonian friends who grew up in Yaoundé, are now students at the brand new Université Scientifique du Sahel in the far north of the country. Intrigued by mysterious disappearances from their school, they decide to investigate... This one will lead them to the heart of Waza Park, where without knowing it, they will solve the oldest archaeological enigma in the history of Cameroon, "A mystery that even the colonists couldn't solve" relates Claye Edou.