Zabelle Sheran Sharm, queen of Bonta and guardian of the Ebony Dofus, dreams of uniting the nations of the World of Twelve. But her tyrannical reign and thirst for power have plunged the lands into misery. A prophecy, proclaimed by her son Shedar, foretells her fall and that a boy with azure blue eyes will bring an end to her power.

This boy is Welsh, a young cook from Brassica. His life is upended when a black dragon, Asalar, attacks his village. To save his world, Welsh must find the Ivory Dofus, the only artifact capable of defeating Zabelle. Accompanied by his faithful friend Béchamel and the adventurers Joris and Khan Karkass, Welsh discovers his true origins and embraces his fate as a hero. Together, they must face unsuspected dangers to free the World of Twelve from Zabelle's clutches.