It is the final confrontation between Lanfeust and Lylth, the vampiric creature that has spread in the form of millions of winged banshees. All continents are ravaged, Eckmül is besieged. At the summer residence of the Gods of Darshan, Lanfeust struggles to find help. The god Lanfeust, caricatural and theatrical version of himself, keeps putting sticks in his wheels. Yet he learns that his only chance of defeating Lylth and saving the world of Troy is to confront the monster in the Center of the World. Except that nobody seems to know where it is, the Center of the World...