Uchimura and company, who are visiting the Royal City of Old Sylvania, are astounded to discover the true identity and hidden power of their guide, the demihuman Kloos. But just as Kloos declares his intentions of preparing for battle with the Calamity, said Calamity emerges! Legion, the Queen of Autavia decides to meet it head on. “Come to me, my secret weapon, the strongest blade.” What Legion summons is none other than a giant ice statue that resembles her elder brother Rex from days long past—and a battle that surpasses all human comprehension now begins!! A fighting spirit blazes in a frozen world!