在亂世(shi)之(zhi)中(zhong),刀定一把(ba)傳世(shi)利器“天(tian)(tian)下(xia)之(zhi)刀”出現,天(tian)(tian)下(xia)只有能(neng)夠(gou)(gou)得(de)到它的刀定人才(cai)能(neng)夠(gou)(gou)統一天(tian)(tian)下(xia)。英雄豪(hao)杰爭相(xiang)追逐,天(tian)(tian)下(xia)一場驚(jing)心動魄的刀定爭奪(duo)之(zhi)戰即將(jiang)展開,誰(shui)能(neng)最終握有“天(tian)(tian)下(xia)之(zhi)刀”,天(tian)(tian)下(xia)誰(shui)將(jiang)成為真正的刀定霸主?