In a desperate move, Nozomu and the Moonlight Bandits send Hokuto and Mutsura a ransom note, telling them to bring the stolen Teardrop of the Moon to a prearranged location, or Hokuto's fiance will be killed. Meanwhile, Mahiru is guided by a friendly spirit to Lake Biwa, the resting place of the seventh and final Teardrop of the Moon...but it is a place where danger awaits as well. Now Mahiru and her companions must find a way to break the magical seal protecting the Teardrop...before it's too late!