Having been summoned by the "Supreme Ruler" Isaac, who subjugated the fire dragons, Sena heads to the neighboring Phondona Empire along with Keith. There, they see the fire dragon king bound by magic chains. Sena, enraged at Isaac for manipulating the dragon and provoking her for her Caller powers, suddenly lets loose explosive magic!
After stopping Liskal the wind dragon's rampage, Sena and Keith descend from mount Ryudo and return to the royal capital of Vekral. There, the pair receive a summons from the neighboring Phondona Empire, which controls the fire dragon, under threat of incurring the wrath of its military if they refuse. But what could the most powerful nation on the continent want with Sena and Keith?!