The Dragon Keepers are down for the count! The Great Monster Deathmecia's invasion has reached the town. D's former classmates scramble to band together to protect the citizens from the monsters. At the same time, D, now heavily wounded from Aizome's attack, stumbles across Hisui on the ruins of the battlefield. Long-held beliefs are unraveling and trust is thin. At this critical turning point, will foe become friend?