Tales of Symphonia: Knight of Ratatosk - Onshuu no Richter,テイルズ オブ シンフォニア ―ラタトスクの騎士― 恩讐のリヒター,Tales of Symphonia: Dawn of the New World - Onshuu no Richter
Due to natural disasters caused by the world regeneration which took place two years ago. Two researchers, Richter and Aster, are trying to find the spirit Ratatosk who seems to be the only one able of restoring the balance of mana.