The sandy city of Sagan was in dire straits due to an unusual outbreak of Horrors. Makai priestess Rian and Elmina save the residents of Sagan while eradicating the Horrors. Then, a gigantic horror named Zagdam, covered in waste, appeared and engaged Rian and the others in a fierce battle. In the middle of the battle, a mysterious Makai Knight suddenly appears. The knight turned his blade not only against the horror, but also against Rian. As the battle descends into utter chaos, Ryuga Dogai finally returns to Rian's side.