When a mysterious flame materializes before high school student Himiko Himejima, her ordinary life takes a dramatic turn. Transported to the ancient kingdom of Yamatai alongside her classmate Kutani Masahiko, they find themselves embroiled in a conflict as the kingdom faces an invasion by the sinister Kune empire. As the Kune empire's malevolent general raises an undead army, the six queen candidates unite to resist the tyranny. Himiko and Kutani, wielding newfound abilities, join forces with the queen candidates in a heroic struggle to liberate Yamatai. Through this perilous journey, they unravel their deep connections to this ancient realm and harness the formidable power of the sacred flame.