Thorgal chose to leave his family in order to preserve his family from the fate of the evil fate that is on him. Upon entering Prokletà, the Moving City, Thorgal thought that he could escape the wrath of the gods. But his refuge will soon prove to be a mortal trap. Every night, the city changes its place, preventing anyone from escaping from it. To break the curse, Thorgal will have to survive among a population recluse of damned and fanatics to the pay of the ruthless Emperor of the city.