Upon learning of the arrival of Taichi and Rin, whose prowess in Azpire has made them near-legendary, Duke Dortesheim decides to accelerate his plan to seize the throne. An assassin is sent to eliminate them, but Taichi and his friends notice his presence and prepare an ambush, foiling the attempt on their lives. The next day, Marquis Nilgan, one of Dortesheim's allies, leads the first attack with a surprisingly small force; but their plan is unveiled when they employ powerful magic rings to bombard the royal defenders with far-range attacks...