The sealing ceremony forthe relic of The Cleansing is finally underway. But just as it seemed theproblem was taken care of once and for all, the ceremony gets interrupted by anincredible surge of magical energy coming from below. Avrora, the disastersleeping at the bottom of Kannawa Lake, has awoken...

In an attempt to rescueNagisa, Kojou and Yukina venture out onto the frozen lake and find themselvesfacing off against a mysterious flying dragon; a vicious encounter that sendsthem sinking beneath the frigid waters. They awake in a hot springs inn to findthat their wounds have healed completely thanks to an equally-mysterious girlnamed Glenda But just who is she? And can she betrusted...?