A new attraction called Grimoire Park has opened in Cho-Tokyo and Gao, Batzz and the others have been invited to the grand opening! But little do they know that a fight with Keisetsu of the Sword Arts is one of the main events, seeking to give them an experiance they'll never recover from! In the middle of an important mission, Zanya is the first to cross swords with him! Can he succeed in this duel of swordsmen or does Keisetsu have more then one sword ready to cut down any hope Zanya had?!